# Wattbench: Full Content > Works where the signal doesn't. Fault-code libraries, field calculators, AS/NZS explainers and dated compliance updates for Australian solar installers — installable, with every fault code searchable and the pages a job needs saved for use with no signal. This is the complete text of Wattbench (https://wattbench.ai) for AI assistants: every explainer, every documented inverter and battery fault code, all glossary terms, the calculator descriptions, current Field Pulse briefings and the standards scope, inlined as plain text. Australian English, currency in AUD, SAA-accredited practice. Free to use with attribution to Wattbench (https://wattbench.ai). Figures are traceable to manufacturer documentation, official authorities or the AS/NZS standards; calculators are estimates for guidance, not compliance certificates. Last site-wide review: August 2026. For a shorter link-only map, see https://wattbench.ai/llms.txt --- # Explainers ## AC vs DC solar panels: a field guide Source: https://wattbench.ai/ac-vs-dc-solar-panels Every PV module starts with DC. The useful question is where conversion and control happen, and whether the exact architecture suits the roof, inverter, battery and network connection. Key points: - PV cells produce DC. A conventional module feeds DC to a string or hybrid inverter; an AC module combines a PV module with a microinverter and supplies AC from the roof. - Microinverter, optimiser and string designs distribute conversion, MPPT, monitoring and failure points differently. Shade response and service impact depend on the exact products and wiring, not the topology label alone. - Battery coupling is an architecture choice, not an automatic winner. Check conversion paths, backup behaviour, operating limits, compatibility, network approval and the intended load profile for the proposed system. Start with the energy path PV cells produce direct current (DC). A conventional module sends DC through a string to a string or hybrid inverter. An AC module combines a PV module with a microinverter, so conversion happens at the module. A third common arrangement adds DC optimisers at module level while retaining a shared inverter. Those labels describe architecture. They do not, by themselves, settle yield, safety, reliability, cost or battery suitability. What changes in the field - Tracking: check which modules share each maximum-power-point tracker (MPPT). String inverters may have several MPPT inputs; microinverters and optimisers move control closer to each module. - Shade and mismatch: module-level electronics can reduce interaction between modules, but the result depends on shade geometry, bypass behaviour, product controls and wiring. - Fault impact: a shared inverter can stop its connected array when it is unavailable. Module-level systems distribute conversion, but may still share branch circuits, communications, gateways or grid interfaces. - Access: a wall-mounted inverter is generally reached without lifting modules. Module-level electronics place more serviceable equipment on the roof. - Monitoring: confirm what the installed licence, gateway and portal actually expose. Architecture alone does not guarantee owner or installer access to module-level data. Battery coupling needs a system check Batteries store DC, but that fact does not make every DC-coupled proposal preferable. AC- and DC-coupled systems use different conversion, control and backup paths. For a new system or retrofit, record: - the exact inverter, battery and gateway models; - which equipment remains energised in backup mode and which loads are supported; - charge, discharge, PV and export limits; - compatibility and warranty conditions; and - the network-approved connection arrangement. Fast selection check - Map roof faces, recurring shade and usable module positions. - Draw the proposed strings, MPPT allocation and conversion points. - Confirm cold-voltage, current and power limits from the exact module and inverter documents. - Decide what monitoring and fault isolation the operator actually needs. - If storage or backup is proposed, check that exact operating path rather than relying on “AC” or “DC” shorthand. - For an Australian SRES installation, verify the exact module and inverter models are on the approved product lists and within their listing dates. There is no topology that wins every site. Compare a documented design against the roof, loads, service plan and current connection requirements. --- ## Bifacial solar panels, explained Source: https://wattbench.ai/bifacial-solar-panels Bifacial modules can convert light reaching both faces. The rear contribution is a system outcome shaped by the exact module, surface reflectance and array geometry, and it can also change the current that the electrical design must accommodate. Key points: - A bifacial module exposes the rear of its cells through a transparent rear layer, which may be glass or a transparent backsheet. - Rear-side yield depends on the exact module's bifacial response plus albedo, diffuse light, height, tilt, row spacing, module gaps and shading. No single generic gain belongs on every site. - Rear irradiance can raise module and string current. Use the manufacturer's bifacial electrical data and the project's design method when checking conductor, protection and inverter limits. What a bifacial module is A bifacial photovoltaic module can convert irradiance reaching both the front and rear of its cells. The rear is exposed through a transparent layer, which may be glass or a transparent backsheet. This construction detail is separate from the cell technology: PERC, TOPCon and HJT cells can all appear in bifacial products. Most rear-side irradiance comes from light reflected by the ground, roof or nearby surfaces, plus diffuse light from the sky and surroundings. The rear contribution is therefore a property of the complete array and site, not a fixed bonus attached to the module name. Bifaciality is not bifacial gain Bifaciality expresses rear-side performance relative to front-side performance under defined test conditions. Bifacial gain is the extra energy or power produced in a particular system compared with its chosen monofacial reference. They are not interchangeable. The exact module datasheet may provide bifaciality information and additional electrical ratings for assumed rear-side irradiance. Use those declared values and conditions. Do not assign a technology-wide bifaciality factor to a product that has not declared one. The system variables IEA PVPS identifies albedo, diffuse-light conditions, mounting height, row spacing and module spacing among the variables that affect rear-side yield. Tilt, ground-cover ratio, array size, edge effects, obstructions and rear-side shading also matter. Rear irradiance is commonly non-uniform, so two modules in the same array may not receive identical rear illumination. Albedo describes the share of incident light reflected by a surface, but a nominal albedo value is not a complete yield model. Surface condition can change with moisture, soiling, vegetation, ageing or snow, and geometry determines how much reflected light the rear can actually see. Keep gain claims bounded There is no honest universal bifacial-gain percentage. In one bounded context, IEA PVPS reports that single-axis tracker fields over typical natural ground with albedo around 0.2 to 0.3 generally remain below 10% bifacial gain. That is not a rooftop allowance or a promise for another tracker site. The same report found that no single parameter correlated well across all of the field systems it reviewed and noted substantial differences between modelling approaches. For a roof, carport or ground mount, model the actual surface, geometry and product. If those inputs are unavailable, leave the expected gain blank rather than borrowing a favourable figure from a different installation. Electrical design must include the rear contribution Rear irradiance can increase current. IEA PVPS notes that designers may need to adjust conductor, fuse and inverter sizing for bifacial arrays. Follow the exact module's declared bifacial electrical data and the project's applicable design process; do not add a generic percentage to current without a supported basis. Field checklist - Confirm the exact module model, rear construction and declared bifacial parameters. - Record the surface, clearance, tilt, spacing, gaps and rear-side obstructions used in the yield model. - Check voltage and current limits using the manufacturer's bifacial electrical information. - Check module mass, mounting zones, clamps and load ratings; bifacial does not always mean glass-glass. - Read the exact product and performance warranties. Do not infer durability or warranty length from transparent rear construction. --- ## Solar cell busbars and fingers, explained Source: https://wattbench.ai/solar-cell-busbars A solar cell's metal grid must collect current without shading too much active area. Busbar count is one part of that design, not a standalone score for module efficiency, strength or reliability. Key points: - Fine fingers collect current across the cell; larger conductors or wires carry it towards the cell interconnections. Grid design balances resistive, contact and shading losses. - More collection points can shorten current paths, but conductor number alone does not prove lower loss, lower silver use, crack tolerance or better reliability. Geometry, materials and manufacturing quality also matter. - Installers should use the finished module's datasheet and installation manual, and inspect modules for damage. Cell-grid marketing cannot replace product-level electrical, mechanical and warranty evidence. The front-contact trade-off The metal grid on a front-contact solar cell must let light reach the silicon while carrying generated current out of the cell. Metal coverage creates shading, while insufficient or poorly designed conductors increase resistive loss. Grid design therefore balances finger and collector resistance, emitter and contact resistance, line width, spacing, material resistivity and shading. Fingers, collectors and interconnections Fingers are the fine metallisation lines spread across the cell. They collect current locally. Larger busbars, wires or other collector structures gather that current and connect it into the module circuit. Some products use flat ribbons, some use multiple round wires, and rear-contact architectures move contacts away from the front surface. Adding collection points can shorten the distance current travels through the fine fingers. That can reduce one component of series resistance, but the whole grid still has to be optimised. Line width, spacing, aspect ratio, conductor shape, contact quality and the module interconnection process all affect the result. Why count is not a quality score Terms such as 5BB, multi-busbar, multi-wire and zero-busbar describe aspects of the contact or interconnection layout. They do not, on their own, state module efficiency, silver use, shading loss, crack tolerance or long-term reliability. Those outcomes depend on the actual geometry, materials and process used in the finished product. Metallisation is also changing as manufacturers and research organisations work to reduce silver use and qualify alternative materials. A percentage saving quoted for one cell format or production baseline should not be transferred to every module using the same marketing label. Keep cell architecture separate PERC, TOPCon and HJT describe passivation and contact architectures. Bifacial describes the ability to use rear-side irradiance. Half-cut, shingled and wire-based layouts describe other cell or module interconnection choices. A product may combine several of these features, so one term should not be used as shorthand for the rest. What matters in the field - Electrical data: design with the exact module's Voc, Isc, Vmp, Imp, temperature coefficients and protection limits. - Mechanical data: follow the approved mounting zones, clamps, loads and handling method in the installation manual. - Condition: inspect modules before and during installation for transport or handling damage and follow the manufacturer's escalation process where damage is suspected. - Evidence: use product-specific test, certification and warranty documents for reliability claims; do not infer them from busbar count. Busbar terminology is useful for understanding how a cell collects current. For specifying and installing a module, the finished product documentation remains the source of truth. --- ## HJT solar cell technology, explained Source: https://wattbench.ai/hjt-solar-technology Heterojunction (HJT or SHJ) combines a crystalline-silicon wafer with thin amorphous-silicon layers. The architecture can support strong passivation and bifacial performance, but the exact module datasheet still decides what belongs in a design. Key points: - HJT places thin intrinsic and doped amorphous-silicon layers around a crystalline-silicon wafer to passivate its surfaces and form carrier-selective contacts. - Research references associate HJT with strong surface passivation and high bifaciality, but the acronym does not guarantee a temperature coefficient, bifaciality value, efficiency or degradation rate. - For field work, use the exact module's electrical ratings, temperature coefficients, bifacial data, dimensions, mass, installation manual and warranty. Do not substitute a technology-wide typical value. What HJT means Heterojunction, commonly shortened to HJT or SHJ, joins two forms of silicon in one cell. A crystalline-silicon wafer provides the absorber. Thin intrinsic and doped amorphous-silicon layers passivate the wafer surfaces and form carrier-selective contacts, with transparent conductive layers used to move current to the metal grid. Passivation matters because charge carriers lost at a defective surface cannot contribute to useful current. Strong surface passivation can support higher cell voltage, but that cell-level advantage does not by itself state the output, reliability or warranty of a finished module. How it differs from TOPCon and PERC HJT and TOPCon are both passivating-contact architectures, but they use different material stacks and manufacturing processes. TOPCon uses an ultra-thin oxide and doped silicon contact. HJT uses thin amorphous-silicon and transparent conductive layers. PERC uses rear-surface passivation with a different rear-contact arrangement. Commercial HJT modules are commonly bifacial. Research organisations report strong surface passivation and typically high bifaciality for the architecture. Treat those as reasons to inspect the product data, not as values to copy into a design: cell metallisation, interconnection and module construction all influence the finished module. What the label does not prove An HJT label does not prove a particular module efficiency, power temperature coefficient, rear-side response, degradation rate or warranty term. It also does not establish that the module will produce more energy than another product on a particular site. Yield depends on the exact module, array layout, thermal conditions, shading, inverter behaviour and other system factors. HJT uses a low-temperature cell process compared with conventional fired-contact production. That affects factory metallisation and interconnection choices; it is not a licence to infer a special on-roof handling rule that is absent from the manufacturer's installation manual. Silver and copper metallisation are also evolving, so older material-use assumptions should not be treated as fixed properties of every current product. Field checks that matter - Electrical design: use the exact Voc, Isc, Vmp, Imp, temperature coefficients, maximum system voltage and overcurrent information. - Bifacial design: use the module's stated bifacial parameters and rear-side electrical data only where the rear will receive meaningful irradiance. - Mechanical fit: check dimensions, mass, approved mounting zones, clamp requirements and load ratings in the installation manual. - Product terms: read the product and performance warranties; do not infer their terms from the cell architecture. When comparing technologies, compare the exact models under the same assumptions. The architecture explains how the cell is built; the module documentation supplies the numbers an installer can design around. --- ## LFP vs NMC: Home Battery Chemistry Source: https://wattbench.ai/lfp-vs-nmc-home-batteries LFP and NMC are both lithium-ion chemistries, but chemistry alone does not establish whether a home battery is safe, durable, or suitable. Compare the exact product, installation and warranty—not a generic cell claim. Key points: - NMC is generally more energy-dense, while LFP is widely used for stationary storage where weight and volume are often less important than cost and frequent cycling. - Abuse-test research generally finds LFP cells more thermally stable than nickel-rich chemistries, but cell chemistry does not replace compliant product design, installation, commissioning or a functioning battery-management system. - Compare each model's usable capacity, rated power, operating-temperature limits, warranted years and energy throughput, backup behaviour, current product-list status and Australian support. Start with the product, not the acronym LFP means lithium iron phosphate. NMC means lithium nickel manganese cobalt oxide. Both are lithium-ion chemistries, but a home battery is a complete system: cells, enclosure, battery-management system, power electronics, protection, firmware and installation all contribute to its behaviour. Chemistry is therefore one comparison field, not a shortcut to a purchase or safety decision. Confirm it against the current datasheet for the exact model and revision; do not infer it from a brand family, enclosure or marketing name. Where chemistry changes the trade-off NMC is generally more energy-dense, which can help where physical size or mass is tightly constrained. LFP is less energy-dense but is commonly selected for stationary storage, where frequent cycling and system cost can matter more than minimum pack size. The International Energy Agency reports that LFP accounted for around 90 per cent of global battery-storage deployments in 2025. That is dated global deployment context, not evidence that a particular Australian home-battery model uses LFP. For a field comparison, use the installed product figures that can actually change the outcome: usable energy in kWh, continuous and surge power in kW, dimensions and mass, mounting and clearance requirements, operating-temperature window, noise, backup capability, expansion rules and communications requirements. Safety needs a system view Peer-reviewed cell abuse testing generally finds LFP more thermally stable than nickel-rich lithium-ion chemistries. That distinction should be kept in proportion. A cell-level result does not prove that every LFP system is safer than every NMC system, and it does not remove the possibility of fire or other hazards. Check the exact product on the current Clean Energy Council approved battery list, follow the manufacturer's current installation instructions, and confirm the installation and commissioning requirements that apply to the site. The Australian Government Solar Consumer Guide also directs buyers to compare product-list status, warranty conditions, traceability and Australian technical support. Compare life and warranty on the same basis Do not carry a generic cycle-life figure from one chemistry into a quote, commissioning record or customer expectation. Manufacturers express life in different combinations of years, cycles, energy throughput and retained capacity, subject to operating conditions and exclusions. - Record the exact model and usable capacity, not nominal capacity alone. - Record the warranted years and energy throughput or cycle conditions. - Check the warranted retained capacity and whether it changes with operating mode. - Check temperature, state-of-charge, internet, maintenance and backup-use conditions. - Confirm who provides Australian warranty and technical support. A higher headline cycle count is not automatically a stronger warranty if the allowed throughput, operating window or remedy is narrower. A field-safe comparison When two batteries use different chemistries, capture the evidence side by side from current manufacturer documents. If a figure is missing or uses a different test basis, leave the comparison open rather than converting it into an assumed equivalent. For the wider system decision, see AC vs DC solar and use the solar system size calculator. These are planning aids, not certificates or substitutes for the approved design and manufacturer instructions. --- ## Microinverters vs string inverters Source: https://wattbench.ai/microinverters-vs-string-inverters The useful comparison is not a winner-by-topology. It is how the proposed models handle this roof, how faults are isolated, what monitoring is available and what must be accessed to service them. Key points: - A string inverter can have one or more MPPT inputs; only modules assigned to the same electrical string and tracker should be treated as one group. - Microinverters give modules independent conversion and tracking, but branch circuits, communications and grid equipment can still be shared failure points. - Do not infer shade gain, warranty life, cost or expandability from topology. Compare the exact models, layout, portal access, warranty terms and approved design. Both topologies convert PV output from DC to AC. A string inverter serves one or more strings and may provide several MPPT inputs. A microinverter sits at module level and controls that module's operating point. See AC vs DC solar panels for the full energy path. Compare the actual design - String and MPPT allocation: identify every module on each string and tracker. Do not describe a multi-MPPT inverter as controlling the whole array at one operating point. - Shade: trace when and where shade lands. Bypass paths, module layout and inverter controls affect the loss; a topology label cannot provide a reliable percentage. - Electrical limits: verify cold open-circuit voltage, operating voltage, current, power and permitted string lengths using the exact documents. - Monitoring: confirm whether module-, string- or system-level data is available to the installer and owner, and whether access depends on a gateway, account or subscription. - Service boundary: record what stops when a device, branch, gateway or shared inverter fails, and what roof access a replacement requires. Field decision Module-level conversion may suit a layout with different operating conditions or a requirement for module-level visibility. A string inverter may suit a design that can be grouped cleanly across its available MPPT inputs and where accessible central service is valuable. Neither statement is a rule: product limits, network settings, rooftop conditions and the service model can change the result. Before accepting either proposal - Match the model numbers on the quote, datasheets and design. - Mark roof faces, shade windows, strings, MPPTs and AC branches. - Check operating limits and the intended export-control arrangement. - Read the exact product and performance warranties, including labour, access and transport terms. - Confirm how commissioning data and later diagnostics will be accessed. - For an Australian SRES installation, confirm the exact models are on the approved product lists and installed before the relevant listing expiry. Use the topology to ask better questions. Use the documented site design to make the decision. --- ## Solar panel orientation and tilt Source: https://wattbench.ai/solar-panel-orientation North is a useful southern-hemisphere starting point, not a site answer. The field decision must account for shade, roof geometry, local weather, interval load, tariffs, export limits and any battery. Key points: - In Australia, a north-facing array is a general starting point for annual solar access; site-specific shade, tilt, horizon and weather can change the result. - East- or west-facing modules shift generation earlier or later. Whether that improves bill value depends on measured load timing, import and export tariffs, export controls and storage operation. - Model the usable roof options before moving modules or adding tilt frames. Record assumptions so the customer can see whether the design targets yield, self-use, a constrained export window or a seasonal load. Choose the objective first An orientation cannot be “best” until the design objective is stated. Common objectives include annual energy, self-consumption, production during a constrained export window, seasonal output, usable system size or lowest installed complexity. What direction changes - North: the Australian Government's YourHome guide gives north as a general southern-hemisphere rule for annual solar exposure. - East or north-east: moves more of the production profile towards morning. - West or north-west: moves more of the profile towards afternoon. - Split arrays: can broaden the production window, subject to shade and suitable string or MPPT allocation. These are profile descriptions, not financial conclusions. Local irradiance, horizon, shade and roof pitch determine the energy. Interval consumption, tariffs, export controls and battery operation determine its value. Field workflow - Mark every usable roof face, pitch and obstruction. - Record recurring shade across the day and note seasonal uncertainty. - Confirm the customer's objective and obtain interval load data where available. - Model realistic layouts with the same weather, losses and equipment assumptions. - Check that differently performing groups are allocated to suitable strings and MPPT inputs. - Record export limits, tariff assumptions and battery controls separately from the yield model. Tilt is not only an energy calculation Tilt changes solar access and seasonal production, but the installed decision also includes the existing roof, mounting certification, wind actions, row spacing, drainage, debris and safe access. Do not recommend a tilt frame from a latitude rule alone. Compare the modelled gain with the added design, installation and maintenance consequences. What to hand over Keep the proposed orientation, tilt, shade assumptions, annual estimate and production profile together. State whether the layout was chosen for annual yield, time-of-day fit or a physical constraint. The estimate is a design aid, not a production guarantee. --- ## How to read a solar panel datasheet Source: https://wattbench.ai/reading-a-solar-datasheet Use the exact model column, read every rating with its test conditions, and carry the electrical and mechanical limits into the site design. The datasheet is an input, not proof of suitability by itself. Key points: - Confirm the exact model and power-class column first. Family datasheets can place several variants and different electrical values on one page. - STC nameplate values are measured at stated reference conditions. String design must also apply the published temperature coefficients and the site's design temperatures. - Product and performance warranties are separate documents. Read coverage, exclusions, remedy and claim costs; do not compare products from the headline duration alone. 1. Lock the product identity Start with the manufacturer, full model number and power class. A family datasheet may cover several variants in adjacent columns. Match the quote, datasheet, module label and design record; do not carry a value from a neighbouring model. 2. Read the rating conditions Module nameplate values at Standard Test Conditions (STC) use 1,000 W/m² irradiance, 25 °C cell temperature and air mass 1.5. STC supports comparison under a common reference; it does not promise that output on a roof. - Pmax: maximum power for the selected model at the stated condition. - Voc and Isc: open-circuit voltage and short-circuit current used in limit checks. - Vmp and Imp: voltage and current at the maximum-power point. - Power tolerance: the manufacturer's permitted nameplate variation. Record it exactly rather than assuming it is positive-only. - NMOT or NOCT table: if supplied, read its printed test conditions. Do not treat it as a site forecast. 3. Carry temperature into the design Datasheets normally state temperature coefficients for power, voltage and current. Use the exact coefficient, unit and reference condition printed for that model. Cold cells can increase open-circuit voltage; hot cells change operating voltage and power. Apply the site's documented design temperatures and the required design method rather than a generic technology range. Then verify the complete string against the inverter's MPPT window, start voltage, maximum input voltage, current and power limits, plus any other applicable system limit. A calculator result remains an estimate until the design inputs and requirements are checked. 4. Check the mechanical schedule - dimensions, mass and approved clamping or mounting zones; - front and rear mechanical load ratings and the conditions attached to them; - maximum system voltage and overcurrent-protection rating; - cable length, conductor size and the exact connector manufacturer and type; - junction-box and enclosure ratings; and - any environmental qualification relevant to the site. Do not translate “compatible” connector wording into permission to mate unlike products. Follow the exact equipment and installation requirements. 5. Separate qualification, listing and site suitability IEC 61215 covers design qualification and type approval for terrestrial PV modules. IEC 61730 covers module safety qualification. These are not substitutes for the Australian product-list check or for a site-specific compliant design. For an Australian SRES installation, the Clean Energy Regulator requires the installed PV module and inverter models to appear on the approved product lists, and the components must be commissioned before their listing expiry. Check the live list against the complete model number. 6. Open the warranty documents A module can have a product warranty for materials or workmanship and a separate performance warranty describing an output floor over time. Compare the actual warranty documents for: - the covered model and warranty start date; - the output curve or stated floor; - exclusions and required records; - repair, replacement, refund or pro-rata remedy; and - labour, freight, removal and reinstallation costs. A duration or degradation figure from another product family is not evidence for this module. Fast handover record Save the exact datasheet and warranty revision used for design, the current approved-list check, the module label photo and the final string schedule. That makes later commissioning, fault-finding and warranty work traceable. --- ## Solar Export Limiting, Explained Source: https://wattbench.ai/solar-export-limiting An export limit controls power sent through the grid connection point. The site approval—not a state-wide rule of thumb—is the authority for its value, operating mode and commissioning requirements. Key points: - Read the connection approval as a set of separate constraints: export, inverter, generation and storage limits may differ, but do not assume they are independent unless the approval says so. - Fixed, zero and flexible export schemes use different equipment, communications and fallback behaviour. Verify the current network requirements and approved models for the exact address. - On site, preserve the approval, as-found settings, meter topology, phase arrangement, timestamps and grid-flow evidence before changing anything or escalating a suspected export fault. Start with the connection point An export limit governs the net power permitted to flow from the premises into the grid at the connection point. Solar may still serve loads or charge a battery behind that point, subject to the approved design and equipment controls. The approval may separately constrain inverter capacity, generation, storage, import or export, so record every field rather than treating one number as the whole connection. The authoritative value is the current connection approval for the address. State summaries, neighbouring systems and remembered defaults are useful prompts only; they are not commissioning evidence. Why limits differ Electricity networks use connection conditions to manage voltage, power quality and available network capacity as customer generation and storage grow. The offered connection can therefore vary by network area, local conditions, application type, phase arrangement and approved equipment. Do not tell a customer that an export limit is imposed only because their street is "full" or that a larger limit is guaranteed after a network upgrade. Capture what the network approved and direct policy or capacity questions to the network. Fixed, zero and flexible arrangements A fixed export limit uses a constant approved cap. A zero-export arrangement is intended to prevent net export, using the approved control scheme and measurement at the connection point. Do not promise that metered flow will be numerically zero at every instant; the applicable technical requirements define the control response and tolerances. A flexible or dynamic connection can vary import or export limits with network conditions. Western Power describes dynamic operating envelopes as adjusting limits in near real time. SA Power Networks currently offers flexible exports state-wide for applicable new or upgraded systems and warns that actual capacity may be below the scheme maximum. These examples show why the network, address and application date matter. CSIP-AUS provides a common Australian communications profile used in some dynamic connection schemes. Its use does not make every inverter, gateway or site eligible. Confirm the scheme's current approved-equipment list, firmware, gateway, internet and commissioning requirements. What to capture on site - Connection approval or reference, issue date, address and approved operating mode. - All stated inverter, generation, storage, import and export limits, including per-phase wording. - Exact inverter, controller, meter or current-sensor models and firmware where visible. - Meter and sensor location, orientation, phase mapping and communications state. - As-found export settings before any authorised change. - Timestamped inverter power, battery power, site load and grid-flow readings taken together. - Active alarms, event logs and the network or manufacturer commissioning result. A low-export reading on its own does not prove that export control is faulty. Site load, battery charging, available solar, grid voltage, a flexible setpoint, communications state and equipment derating can all affect the observed flow. Keep commissioning inside authority Do not copy a setting from another site or use this guide to choose a control mode. A licensed worker should follow the live connection approval, current network technical requirements and the manufacturer's instructions for the exact equipment. If those sources conflict or are unavailable, preserve the as-found state and escalate rather than guessing. For planning only, use the solar system size calculator and payback calculator with the site's actual approved export arrangement. Results are estimates, not connection approvals or certificates. --- ## TOPCon solar cells, explained Source: https://wattbench.ai/topcon-solar-cells TOPCon is a passivating-contact cell architecture built around an ultra-thin oxide and a doped silicon layer. It is now a mainstream production route, but the label alone does not supply the figures needed for a system design. Key points: - TOPCon means Tunnel Oxide Passivated Contact: an ultra-thin dielectric layer and doped silicon layer form a passivating, carrier-selective contact. - The architecture reduces contact recombination and has become a mainstream industrial route, commonly on n-type wafers, but it does not guarantee a product-level efficiency or reliability result. - Design from the exact module datasheet and installation manual, especially the voltage, current, temperature-coefficient, bifacial, mounting and warranty details. What TOPCon is TOPCon stands for Tunnel Oxide Passivated Contact. It is a silicon-cell contact architecture, not a finished-module performance grade. Fraunhofer ISE describes the contact as an extremely thin dielectric tunnel oxide combined with a thin doped silicon layer. The stack passivates the silicon surface while allowing the wanted charge carriers to reach the metal contact. Reducing recombination at the contact can support higher cell voltage and efficiency. Commercial TOPCon products are commonly based on n-type wafers, but the name TOPCon defines the contact approach rather than every other material or construction choice in a module. Why it became mainstream Industry roadmaps and public research programmes describe a rapid production transition from PERC to passivating-contact technologies, with TOPCon now a mainstream route. One practical driver is that TOPCon production can be adapted from parts of the conventional silicon-cell manufacturing base more readily than HJT, whose process flow is substantially different. That industry-level manufacturing context does not prove that one quoted module is cheaper, more durable or higher yielding than another. Those are product- and site-specific questions. Compare products, not acronyms Do not assign a generic module efficiency, temperature coefficient, bifaciality factor, degradation rate or warranty term to TOPCon. Cell metallisation, interconnection, encapsulation, glass or backsheet selection and module layout all affect the finished product. Current reliability research also treats n-type technologies as products and material stacks to evaluate, not as a blanket guarantee against every degradation mechanism. TOPCon modules are often offered as bifacial products. If rear-side irradiance is part of the design, use the exact model's bifacial parameters and rear-side electrical ratings. A technology-wide typical is not a substitute for the manufacturer's declared data. Field checks that matter - String limits: calculate with the exact Voc and its temperature coefficient, not the cell type. - Current limits: use Isc, Imp and the applicable rear-side contribution from the module documentation where bifacial operation is expected. - Mechanical installation: check dimensions, mass, mounting zones, clamp positions and load ratings for the exact model. - Product evidence: read the installation manual, certificates supplied for the product, and the product and performance warranties. The useful conclusion is deliberately narrow: TOPCon explains how the cell contact is formed. The datasheet and installation manual explain whether the module fits the job. --- ## Virtual Power Plants (VPP), Explained Source: https://wattbench.ai/virtual-power-plants A virtual power plant coordinates customer batteries or other flexible devices through software. For an owner or technician, the useful question is not the fleet size—it is what the live contract and control state allow the operator to do at this site. Key points: - VPP capability is not the same as active enrolment. Confirm the provider, contract, compatible hardware, account and current participation state. - The operator may control some charging or discharging in return for a contract-defined benefit; reserve, event behaviour, tariff interaction, warranty and exit terms vary by offer. - When battery behaviour looks unexpected, capture timestamps, state of charge, site and grid power, operating mode, communications and provider event status before changing settings. Capability, enrolment and dispatch are different A virtual power plant, or VPP, coordinates customer batteries and sometimes other flexible devices through software and communications. The Australian Government describes participation as allowing an operator to control a battery for some or all of the time in return for a financial benefit. Keep four states separate: the product may be technically capable, the site may be eligible for an offer, the owner may have enrolled, and the operator may or may not be actively dispatching the battery now. A VPP-capable label proves only the first of those unless current account evidence shows more. What the operator may do Depending on the offer, an operator may coordinate charging or discharging in response to energy prices, power-system needs or a network service. Different VPPs have different control rights and pass value to customers in different ways. Do not promise a payment structure, event frequency or bill outcome from a generic VPP description. Internet connectivity, compatible firmware, additional hardware or software, and permission for a controller to access the system may be required. Eligibility can depend on the exact battery and inverter combination, retailer, network area, tariff and existing account. Read the live offer before enrolment - Which exact battery, inverter and gateway models are compatible? - How is the benefit calculated, and which terms or rates can change? - How much capacity or state of charge can the operator use, and what reserve remains? - Can VPP control change backup availability, self-consumption or tariff optimisation? - What internet, account access and data sharing are required? - How can the owner pause or leave, and are there fees, repayment or lock-in terms? - How does participation interact with the battery and workmanship warranties? Government incentives and provider offers are time- and location-sensitive. NSW currently publishes a VPP incentive, while Western Australia's Project Jupiter is building future large-scale coordination capability. Use those live official pages to establish present eligibility; do not carry a historical trial figure or old advertised payment into advice. Triage unexpected battery behaviour VPP activity can resemble a battery fault or an unexplained settings change. Before altering an installer setting, record: - the owner-authorised provider and account, enrolment status and relevant contract; - the exact timestamp and timezone of the behaviour; - battery state of charge, operating mode, backup reserve and active alarms; - solar generation, site load, battery power and grid flow at the same time; - internet, gateway and cloud status, plus any provider event notification; - screenshots and exportable logs from both the manufacturer and provider views. Ask the VPP provider to confirm whether it issued a command at that timestamp. Ask the manufacturer or installer to investigate if no dispatch explains the behaviour, alarms are present, or the system does not return to its expected owner mode. Do not disable communications or remove enrolment without the owner's authority and the contract exit process. Value is household- and contract-specific VPP participation can provide a financial benefit and support the power system, but it can also change cycling, backup energy and control. The Australian Government warns that battery savings may not repay the battery within its warranted life and recommends checking possible battery-life, backup and warranty effects when comparing VPPs. Use the solar payback calculator only as a planning estimate. Keep a VPP payment separate from ordinary self-consumption savings unless the current offer provides enough evidence to model both without double counting. --- ## Battery Backup Architecture and Essential Loads Source: https://wattbench.ai/battery-backup-architecture-essential-loads A battery’s energy capacity does not tell you what will remain energised in an outage. The answer sits in the backup architecture, transfer equipment and documented load schedule. Key points: - Separate backup power, backup energy and backed-up circuits: they are different design questions. - Whole-home, selected-circuit and managed-load systems behave differently during an outage and must be handed over accordingly. - Commissioning must prove transfer, circuit selection, load behaviour, communications and recovery—not only that the battery charges. Three questions, not one Battery proposals often collapse three separate quantities into “backup”: usable energy in kilowatt-hours, available power in kilowatts and the circuits physically connected to the backed-up side. Energy influences duration. Power and surge behaviour determine what can run at once. The switchboard and transfer architecture decide what is energised at all. Use the essential-load schedule to document continuous demand and daily energy, then check the exact battery, inverter and transfer-equipment limits in current product documentation. The worksheet is an estimate and does not replace the licensed design. Common architectures Selected-circuit backup moves nominated circuits to an essential-load section. Whole-home backup places a broader installation behind compatible transfer equipment but still remains constrained by system power and load behaviour. Managed-load backup can shed or sequence circuits through supported controllers. The labels are not interchangeable, and product families support different configurations. Tesla describes its Backup Gateway as the component that detects grid outages, disconnects the backed-up system from the grid and acts as a site meter. Enphase identifies its System Controller as part of supported backup configurations and publishes separate installation and commissioning material. Those product documents—not a generic diagram—govern the actual arrangement. Select essential loads from evidence Start with what the customer needs during a realistic outage: refrigeration, lighting, communications, medical or work-critical equipment and limited general power. Record continuous demand, expected run-time, starting behaviour and whether any load can be deferred. Large thermal and motor loads can consume the available power quickly or create starting conditions that a simple daily-energy total misses. Do not imply that a circuit is backed up until its connection and operation have been verified. The handover should name backed-up and non-backed-up circuits, operating limitations, reserve behaviour and the controls available to the owner. Commission the outage behaviour A useful record captures the system state before the test, the transfer event, which circuits remained available, any load shedding, battery power and state of charge, alerts, restoration and return to normal grid operation. Testing, switching and switchboard work are licensed-worker tasks and must follow the exact manufacturer process and applicable Australian requirements. AS/NZS 5139 covers safety and installation requirements for battery systems used with power conversion equipment. AS/NZS 4777.1:2024 covers installation requirements for inverter energy systems and distinguishes its scope from PV-array and battery-system standards. Always work from the current editions and the approved design. --- ## Solar and Battery Commissioning Evidence Packs Source: https://wattbench.ai/commissioning-evidence-pack A commissioning record should let another competent person understand what was installed, what was tested, what changed and what the customer received. Key points: - Record the approved design and equipment identity before recording results. - A useful test entry names the point, condition, method, result and person responsible. - Keep as-found state, changes, final state and customer handover together so the record survives staff and platform changes. The pack has four layers Authority is the approval, current design, applicable network requirements and manufacturer instructions. Identity is the exact installed equipment, firmware, serial or asset references and configuration. Evidence is the timestamped observation, measurement, action and outcome. Handover is what the customer received and was shown. If one layer is missing, the next technician is forced to reconstruct intent from screenshots and labels. A strong pack makes the job legible without claiming that the report itself is a compliance certificate. Capture as found before changing anything Record system state, active alerts, relevant settings, monitoring status and visible equipment condition before resets, updates or configuration changes. This preserves the evidence that explains why the work was required and prevents the final “all green” screen from erasing the fault history. Make every result interpretable For a reading, name the measurement point, phase or circuit, operating condition, unit, instrument or method and time. For an action, record who performed it, the supporting instruction or approval and the before-and-after state. For a photograph, store the image in the business’s approved system and put its stable file reference in the job pack; Wattbench deliberately does not create a new cloud photo store. Product commissioning remains product-specific Enphase publishes an Australian commissioning guide and installation checklist that include device provisioning, validation and documented checks. Tesla publishes model-specific installation documents and limits installation to certified installers. These demonstrate why a generic checklist cannot replace the exact product workflow. Close with a handover record - Final equipment and settings record. - Completed test and validation evidence. - Backed-up circuits, export arrangement and operating limitations. - Monitoring access confirmed with the customer. - Shutdown, emergency and support information supplied. - Outstanding actions, owner and due date. For the owner, the Owner Handover Card prints on one page the codes their equipment may show, the reviewed owner action for each, when to call you and what to send. Where the job removed or replaced equipment, record where it went. The End-of-Life & Battery Return Pathway links each state's agency pages, the stewardship status and the manufacturer return pages. Create a saved Wattbench job, file calculators and references to it, add structured evidence, then print the field report. The report is a durable field record—not a quote, engineering specification or certificate. --- ## Export-Control Commissioning: Metering, CTs and Proof Source: https://wattbench.ai/export-control-commissioning Export control is a closed-loop site function, not just an inverter setting. Commission it from the connection approval through to measured import and export evidence. Key points: - Start with the approved site limit and point of application; do not infer either from the inverter rating. - The controller can only act on what its meter or CT arrangement reports, so direction, phase mapping, location and communications all need evidence. - A commissioning record should show settings as found, controlled test conditions and the measured response—not just a screenshot saying export control is enabled. Begin with the approved intent Export control starts with the connection approval, not the inverter menu. Record the approved export arrangement, the connection point it applies at, the phase arrangement and every inverter or battery that contributes to site generation. Network rules change and existing approvals may remain subject to the conditions under which they were assessed, so never replace the site record with a remembered “standard” limit. The inverter's AS/NZS 4777.2 region or grid profile is part of the same approved intent. The network says which region applies and the manufacturer's manual says where it is set; the Grid Profile Settings Finder links each network's own settings page and each inverter family's menu path and profile names, without restating any setting value. Western Power describes export limits as applying net at the network connection point. Its current guidance also says that changing an existing export or generation limit can trigger a new application. Other DNSPs use their own connection processes. The job pack therefore needs the actual approval and current DNSP requirements attached or referenced. Treat the measurement chain as part of the control loop A feed-in controller needs a trustworthy view of net site flow. Depending on the product, that view comes from a compatible energy meter, direct-connected measurement or current transformers. Record the meter and controller model, firmware, communications path, CT ratio where applicable, physical location, phase mapping and indicated direction. Direction errors are especially deceptive: the interface may show plausible numbers while import and export signs are reversed. Multi-phase sites add another failure mode when a CT is mapped to the wrong phase. Do not correct wiring or settings from this article. Those are licensed-worker tasks performed from the exact product instructions and approved design. Commission with controlled observations Capture a baseline with generation, site load and grid flow clearly identified. Then create documented operating conditions that allow the control response to be observed without defeating protection or exceeding the approval. Compare the inverter or controller view, the site measurement and any independent meter evidence as separate sources; they can differ in update interval, sign convention and measurement point. Record the requested limit, actual site flow, response time observed, equipment state and any communications loss behaviour. A single “enabled” screen does not prove that the complete measurement-and-control loop works. What belongs in the evidence pack - Connection approval and approved export arrangement. - Single-line or site diagram identifying the measurement point. - Meter, CT, controller and inverter identifiers and firmware. - Settings as found and every authorised change. - Import/export observations under named operating conditions. - Final screenshots, test results and customer handover information. Use the export-control commissioning playbook to collect the sequence and file the resulting evidence to a saved Wattbench job. --- ## Grid-Voltage Investigations: Build the Evidence Chain Source: https://wattbench.ai/grid-voltage-investigation A single high reading does not identify the cause. Separate inverter telemetry, site measurements, circuit rise and network conditions before escalating. Key points: - Start with timestamps and patterns: one event, daily recurrence and site-wide behaviour imply different investigations. - Keep inverter telemetry, measurements at named points and retailer or DNSP data as separate evidence sources. - Do not alter grid-protection settings to mask a voltage problem; settings and escalation follow the approval and current network process. Start with the event pattern Record the exact event code, inverter model, time, duration, generation, site load and weather. Note whether every inverter or phase is affected and whether the event occurs at similar times on clear days. Monitoring data can establish a pattern, but it is not automatically a calibrated electrical measurement. Name every measurement point A voltage reading only makes sense when its location, phase, method, time and operating condition are recorded. Measurements at the inverter terminals, main switchboard and connection point answer different questions. The AC voltage rise worksheet compares two entered readings without pretending to issue a compliance verdict. Electrical measurements and switchboard access are licensed-worker tasks. Record instrument identification and test conditions in the evidence log. Do not send an owner to operate isolators or open equipment to collect data. Separate the site from the network Voltage at an inverter reflects both the incoming supply and changes across the site’s AC circuit while exporting. A structured investigation compares named points under documented conditions, checks the installation and protection arrangement, and then determines whether DNSP escalation is supported. It does not jump from an app screenshot to a network conclusion. Keep settings changes out of diagnosis Grid response and protection settings exist to satisfy current connection requirements. Western Power’s guidance states that existing approvals remain tied to their conditions and that changing export or generation limits can require a new application. Never widen or defeat a setting simply to keep an inverter online. Preserve settings as found, approval details and every authorised change. Prepare an escalation pack - Connection approval, supply and phase details. - Exact inverter events and a timestamped recurrence pattern. - Measurements at clearly named points and conditions. - Relevant circuit and equipment details. - Monitoring exports kept distinct from instrument readings. - Installer assessment and the specific question for the DNSP. The grid-overvoltage playbook provides the safe sequence for packaging that evidence. --- ## Module and Inverter Compatibility: The Complete Check Source: https://wattbench.ai/module-inverter-compatibility Matching watts is not enough. A defensible string design checks cold voltage, operating voltage, current, parallel strings, connectors and the exact model documentation. Key points: - Use exact model numbers and current documents; family-level marketing data is not a design input. - Check maximum cold open-circuit voltage separately from the operating MPPT window and starting voltage. - Current compatibility includes input, short-circuit, connector and parallel-string constraints—not only module Imp. Freeze the exact product pair Begin with the complete module and inverter model numbers, document revisions and proposed MPPT/string arrangement. A family datasheet can cover multiple power classes with different electrical values. Record the precise column used and keep a copy or link in the job evidence pack. Voltage has two different jobs The maximum-voltage check uses string open-circuit voltage corrected for the expected lowest cell temperature. Manufacturer instructions from LONGi and SMA both state that cold open-circuit voltage must remain within the relevant system and inverter limits. This is a hard equipment and safety boundary. The operating check uses the module’s maximum-power voltage across expected operating temperatures and compares it with the inverter’s MPPT and starting ranges. Passing the maximum-voltage check does not prove that the string will track efficiently when hot, and sitting inside a broad operating range does not necessarily mean full rated power is available across it. Current is more than one number Record module operating current and short-circuit current, strings per MPPT, the inverter’s usable input-current and short-circuit limits, and any connector or input constraints in the product instructions. Parallel strings add current. Manufacturer terminology differs, so do not substitute “maximum input current” for a separately specified short-circuit-current boundary. Check the physical and supported configuration Confirm compatible connector families, conductor and protection design, earthing arrangement, module type restrictions, MPPT sharing rules and any optimizer or rapid-shutdown requirements. SMA’s product instructions, for example, distinguish electrical limits and state configuration expectations for modules sharing an input. The exact product manual wins. Use Wattbench as a worksheet, not approval The compatibility worksheet compares the values you enter and the string sizing calculator exposes its temperature formula. Neither knows every product restriction or the current standard. Save the result with the source documents and have the final design completed by the appropriately licensed and accredited person. --- # Field Pulse Dated field briefings from official regulator and accreditation sources. Authority status and effective timing are separate: a proposal or intended date is not a requirement in force. Offline copies are snapshots and should be rechecked after reconnecting. ## Mid-scale solar SRES expansion is proposed — not yet in force Source: https://wattbench.ai/pulse/mid-scale-solar-sres-expansion-proposal Authority status: proposal Timing: Intended start only — subject to regulations Reviewed: 2026-08-29 Next review: 2026-09-12 What changed: The government announced an intended SRES pathway for mid-scale PV in the 100 kW-to-1 MW range. Why it matters: If implemented, eligible mid-scale projects would create STCs instead of relying only on the large-scale certificate pathway. On the next job: Keep using the current eligibility rules. Do not treat 1 October as operative until the regulations and CER guidance confirm commencement and conditions. Watch for: Final regulations, confirmed commencement, eligibility detail and any extra design, installation or compliance requirements. ### Status now - The Australian Government announced the intended expansion on 5 August 2026. - The stated 1 October 2026 start is conditional on regulations being in place, so it is not a current field entitlement. ### What the proposal would change - The proposed arrangements cover total onsite solar PV capacity between 100 kW and 1 MW and would allow eligible systems to create STCs. - Existing accredited large-scale systems would remain under their current LRET arrangements, while existing SRES arrangements below 100 kW would be unchanged. ### What to check before relying on it - CER says additional design, installation and compliance requirements are still being considered and further commencement and eligibility information will be published. Official sources: - Clean Energy Regulator: Expansion of solar photovoltaic eligibility under the Small-scale Renewable Energy Scheme — https://cer.gov.au/news-and-media/news/2026/august/expansion-solar-photovoltaic-pv-eligibility-under-small-scale-renewable-energy-scheme --- ## PV labelling course turns inspection findings into field learning Source: https://wattbench.ai/pulse/pv-labelling-course-and-field-resources Authority status: guidance Timing: Training and resources — no commencement date stated Reviewed: 2026-08-29 Next review: 2026-11-29 What changed: SAA and CER released the free COM005 PV labelling module and added information sheets on recurring PV labelling non-compliances. Why it matters: SAA reports that labelling remains one of the most common non-compliance areas identified through CER SRES inspections. On the next job: Accredited professionals can find COM005 in the SAA CPD Hub and use the information sheets to prepare and review work. Watch for: Treat the material as training support. Continue checking the current standards and applicable jurisdictional requirements for the job. ### What is available - COM005 is a free SAA Solar PV Labelling Module covering real-installation application, compliant and non-compliant examples, and common problem areas. - Completion of the course and assessment earns 20 CPD points. ### What sits beside the course - SAA added an overview of the 10 most common PV labelling non-compliances and a more detailed rectification resource to its Resources and Guides library. ### How to use it on the bench - Accredited professionals can enrol by searching for COM005 in the SAA CPD Hub Store or Learning Dashboard. - Use the course and sheets to sharpen job preparation and review; they do not replace access to the standards or the rules applying in the installation jurisdiction. Official sources: - Solar Accreditation Australia: PV labelling training course and resources available — https://saaustralia.com.au/pv-labelling-training-course-and-resources-available/ --- ## Battery labelling photos are now part of every SRES installation record Source: https://wattbench.ai/pulse/solar-battery-labelling-photo-evidence Authority status: in-force Timing: In force from 1 March 2026 Reviewed: 2026-08-29 Next review: 2026-09-29 What changed: Accredited battery installers must capture photo evidence of compliant critical labelling for every solar battery installation from 1 March 2026. Why it matters: CER says missing required photos can delay processing or lead to an STC claim being rejected. On the next job: Before leaving site, capture clear geotagged and timestamped photos covering the meter box, each relevant switchboard and inside cover, and the battery front and sides. Watch for: These photos are additional to the existing installer on-site verification evidence; retain the original files with their metadata intact. ### What is now required - The requirement applies to every solar battery installed from 1 March 2026 by accredited battery installers for SRES claims. - The new evidence targets compliant critical labelling and sits beside the existing installer onsite verification photos. ### What the photo set needs to cover - CER calls for clear, geotagged and timestamped photos of critical labelling at the outside of the meter box, each relevant switchboard and inside cover, and the front and sides of the battery. - The detailed guide says original JPEG, PNG or HEIC files retain the required metadata; photos embedded in a PDF do not. ### What happens if the evidence is missing - CER warns that missing required photos can delay or reject STC claim processing. - Provide the files with the compliance paperwork; they are additional to the ordinary onsite attendance record. Official sources: - Clean Energy Regulator: New solar battery photo requirements now in place — https://cer.gov.au/news-and-media/news/2026/march/new-solar-battery-photo-requirements-now-place - Clean Energy Regulator: Solar battery installers and designers — https://cer.gov.au/schemes/renewable-energy-target/renewable-energy-target-participants-and-industry/solar-battery-installers-and-designers - Clean Energy Regulator: Solar battery photo guide — https://cer.gov.au/document/solar-battery-photo-guide --- # Inverter & Battery Fault Libraries Documented error / alarm codes by manufacturer. Each entry: code, name: meaning (and, where one exists, the reviewed homeowner and installer remedy, or otherwise the documented fix). Faults involving DC/AC isolation, wiring or opening a unit are licensed electrical work. ## Huawei (SUN2000 series): fault codes Source: https://wattbench.ai/huawei-inverter-error-codes A reference compiled by Wattbench from publicly available Huawei inverter documentation. Source-linked homeowner and installer remedies are reviewed against the Australian SUN2000-(8KTL–20KTL)-M2 and SUN2000-(20KTL–40KTL)-M3 manuals; codes each manual documents alone cite that manual alone (2080 and 2081 are M2-only, 2003, 2085, 2090 and 2091 are M3-only). The four remaining residential-hybrid codes (2068, 2070, 2077, 2082) appear in neither cited manual, so they stay searchable with an explicit blank instead of inheriting M2/M3 applicability. Safety note: anything involving DC isolators, AC switches, wiring, electrical measurements or opening the unit is licensed-electrician work. If in doubt, record the alarm and contact your installer. - 2001, High string input voltage: Open-circuit voltage exceeds the maximum input voltage. Safe checks now: Record the alarm and cause ID if shown, leave PV, AC and earthing wiring and isolators untouched, and contact the installer. Electrical measurements and recovery work require a licensed worker. Installer remedy: A licensed installer should check the number of PV modules connected in series in the PV string, and ensure the string open-circuit voltage is no greater than the maximum operating voltage. Once the PV array is correctly configured, the alarm clears automatically. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2002, DC arc fault: The PV string power cable arcs or is in poor contact. Cause ID 1 = PV1, Cause ID 2 = PV2. Safe checks now: Record the alarm and cause ID if shown, leave PV, AC and earthing wiring and isolators untouched, and contact the installer. Electrical measurements and recovery work require a licensed worker. Installer remedy: A licensed installer should check whether the string cables arc or are in poor contact. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2003, DC arc fault: The PV string power cable arcs or is in poor contact. Cause ID 1 = PV1, Cause ID 2 = PV2. Safe checks now: Record the alarm and cause ID if shown, leave PV, AC and earthing wiring and isolators untouched, and contact the installer. Electrical measurements and recovery work require a licensed worker. Installer remedy: A licensed installer should check whether the string cables arc or are in poor contact. Applicability: confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2011, String reversed: The PV string is reverse-connected. Cause ID 1 = PV1, Cause ID 2 = PV2. Safe checks now: Record the alarm and cause ID if shown, leave PV, AC and earthing wiring and isolators untouched, and contact the installer. Electrical measurements and recovery work require a licensed worker. Installer remedy: A licensed installer should check whether the PV string is reverse-connected to the inverter. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2012, String current back-feed: Only a few PV modules are connected in series in the string, so its end voltage is lower than the other strings. Cause ID 1 = PV1, Cause ID 2 = PV2. Safe checks now: Record the alarm and cause ID if shown, leave PV, AC and earthing wiring and isolators untouched, and contact the installer. Electrical measurements and recovery work require a licensed worker. Installer remedy: A licensed installer should compare the module count with parallel strings, check for shading, and verify the string open-circuit voltage. Any reconfiguration must follow the exact model procedure and only occur after the circuit is made safe. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2021, AFCI check failure: The AFCI self-check fails. Either the AFCI check circuit is abnormal, or the AFCI circuit is faulty. Safe checks now: Record the alarm and cause ID if shown, leave PV, AC and earthing wiring and isolators untouched, and contact the installer. Electrical measurements and recovery work require a licensed worker. Installer remedy: A licensed installer should follow the exact M2 or M3 manual's controlled diagnostic and recovery procedure for this alarm. Do not substitute a generic switching sequence; if the alarm persists after the documented check, preserve the event evidence and escalate to Huawei support. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2031, Phase wire short-circuit to PE: The impedance of the output phase wire is low, or it is short-circuited to PE. Safe checks now: Record the alarm and cause ID if shown, leave PV, AC and earthing wiring and isolators untouched, and contact the installer. Electrical measurements and recovery work require a licensed worker. Installer remedy: A licensed installer should check the impedance of the output phase wire to PE, locate the position with low impedance, and restore it. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2032, Grid failure: The grid is experiencing an outage, the AC circuit is disconnected, or the AC switch is off. Safe checks now: Record the alarm, cause ID if shown, and time; check only whether the property has grid supply and allow the inverter to recover. If it repeats, contact the installer; do not change protected grid settings. Installer remedy: Check whether grid supply is available and record the switch states without operating them. If supply is present, a licensed installer should verify the AC cable and switch connection. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2033, Grid under-voltage: The grid voltage is below the lower threshold, or the under-voltage duration exceeds the value specified by LVRT. Safe checks now: Record the alarm, cause ID if shown, and time; check only whether the property has grid supply and allow the inverter to recover. If it repeats, contact the installer; do not change protected grid settings. Installer remedy: The inverter normally recovers when the grid returns to range. If repeated, the installer should verify the measured voltage and AC connection; contact the network operator if supply is out of range. Change protection settings only with network approval. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2034, Grid over-voltage: The grid voltage is above the upper threshold, or the over-voltage duration exceeds the value specified by HVRT. Safe checks now: Record the alarm, cause ID if shown, and time; check only whether the property has grid supply and allow the inverter to recover. If it repeats, contact the installer; do not change protected grid settings. Installer remedy: The inverter normally recovers when the grid returns to range. If repeated, the installer should verify the voltage at the grid connection point and contact the network operator if it is out of range. Change protection settings only with network approval. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2035, Unbalanced grid voltage: The difference between grid phase voltages exceeds the upper threshold. Safe checks now: Record the alarm, cause ID if shown, and time; check only whether the property has grid supply and allow the inverter to recover. If it repeats, contact the installer; do not change protected grid settings. Installer remedy: The inverter normally recovers when the grid returns to range. If repeated, a licensed installer should verify the phase voltages and AC output cables, then escalate an out-of-range supply to the network operator. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2036, Grid over-frequency: Grid exception: the actual grid frequency is higher than the local grid standard allows. Safe checks now: Record the alarm, cause ID if shown, and time; check only whether the property has grid supply and allow the inverter to recover. If it repeats, contact the installer; do not change protected grid settings. Installer remedy: The inverter normally recovers when frequency returns to range. If repeated, verify the event data and contact the network operator if supply is out of range. Change protection settings only with network approval. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2037, Grid under-frequency: Grid exception: the actual grid frequency is lower than the local grid standard requires. Safe checks now: Record the alarm, cause ID if shown, and time; check only whether the property has grid supply and allow the inverter to recover. If it repeats, contact the installer; do not change protected grid settings. Installer remedy: The inverter normally recovers when frequency returns to range. If repeated, verify the event data and contact the network operator if supply is out of range. Change protection settings only with network approval. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2038, Unstable grid frequency: Grid exception: the rate of change of grid frequency does not comply with the local grid standard. Safe checks now: Record the alarm, cause ID if shown, and time; check only whether the property has grid supply and allow the inverter to recover. If it repeats, contact the installer; do not change protected grid settings. Installer remedy: The inverter normally recovers when the grid stabilises. If the event repeats, have the installer verify the frequency data and contact the network operator if it is outside range. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2039, Output over-current: The grid voltage drops dramatically or the grid is short-circuited, so the inverter's transient output current exceeds the upper threshold and protection is triggered. Safe checks now: Record the alarm, cause ID if shown, and time; check only whether the property has grid supply and allow the inverter to recover. If it repeats, contact the installer; do not change protected grid settings. Installer remedy: The inverter monitors for recovery automatically. If the event repeats or affects production, a licensed installer should check the AC output for a short circuit and contact Huawei support if unresolved. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2040, Output DC component over-high: The DC component of the inverter output current exceeds the specified upper threshold. Safe checks now: Record the alarm, cause ID if shown, and time; check only whether the property has grid supply and allow the inverter to recover. If it repeats, contact the installer; do not change protected grid settings. Installer remedy: The inverter monitors for recovery automatically. If the event repeats, contact the installer, dealer or Huawei technical support. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2051, Abnormal residual current: The insulation impedance of the input side to PE decreases while the inverter is operating. Safe checks now: Record the alarm and cause ID if shown, leave PV, AC and earthing wiring and isolators untouched, and contact the installer. Electrical measurements and recovery work require a licensed worker. Installer remedy: A transient event may clear automatically. If it repeats or persists, a licensed installer should test the impedance between each PV string and earth and rectify any insulation fault. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2061, Abnormal grounding: The N cable or ground cable is not connected. When a PV array is grounded, the inverter output is not connected to an isolation transformer. Safe checks now: Record the alarm and cause ID if shown, leave PV, AC and earthing wiring and isolators untouched, and contact the installer. Electrical measurements and recovery work require a licensed worker. Installer remedy: A licensed installer should power off the inverter using the exact model procedure, verify the PE and neutral connections, and confirm any isolation-transformer configuration before changing the grounding-inspection setting. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2062, Low insulation resistance: The PV array is short-circuited to PE, or the array's environment is damp and insulation between the array and ground is poor. Safe checks now: Record the alarm and cause ID if shown, leave PV, AC and earthing wiring and isolators untouched, and contact the installer. Electrical measurements and recovery work require a licensed worker. Installer remedy: A licensed installer should test the impedance between the PV array and PE, locate any short circuit or insulation defect, and verify the inverter PE connection. Do not lower the protection threshold without confirming the exact model requirements and site conditions. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2063, Over-temperature: The inverter is installed in a poorly ventilated location, or the ambient temperature is too high. Safe checks now: Record the alarm and check only for safely visible blocked ventilation or direct sun. Do not open the inverter; contact the installer if the alarm remains after the unit cools. Installer remedy: Check the ventilation and ambient temperature at the install location. If ventilation is poor or the ambient temperature is above the upper threshold, improve airflow and heat dissipation. If both meet requirements, contact your dealer or Huawei technical support. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2064, Device fault: An unrecoverable fault has occurred on a circuit inside the inverter. Safe checks now: Record the alarm, inverter indicators and software version if visible. Do not power-cycle, load firmware or alter communication wiring; contact the installer or Huawei support. Installer remedy: A licensed installer should follow the exact M2 or M3 manual's controlled diagnostic and recovery procedure for this alarm. Do not substitute a generic switching sequence; if the alarm persists after the documented check, preserve the event evidence and escalate to Huawei support. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2065, Upgrade failed / software version mismatch: The upgrade did not complete normally. Safe checks now: Record the alarm, inverter indicators and software version if visible. Do not power-cycle, load firmware or alter communication wiring; contact the installer or Huawei support. Installer remedy: Retry the supported inverter upgrade. If it fails repeatedly, contact the dealer or Huawei technical support; do not install an unverified firmware package. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2066, Licence expired: The privilege certificate has entered its grace period; the privileged feature will become invalid soon. Safe checks now: Record the alarm, inverter indicators and software version if visible. Do not power-cycle, load firmware or alter communication wiring; contact the installer or Huawei support. Installer remedy: Apply for and load a new privilege certificate through the authorised Huawei workflow. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2067, Faulty power collector: Communication with the power meter is interrupted. Safe checks now: Record the alarm and note whether monitoring or power-flow data is missing. Do not access the meter, RS485 wiring or switchboard; contact the installer if it persists. Installer remedy: A licensed installer should confirm the power meter settings match the actual model, that its communications parameters match the inverter's RS485 settings, that it is powered on, and that the RS485 cable is connected correctly. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2068, Battery abnormal: The battery is faulty or disconnected, or the battery circuit breaker is off while the battery is running. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2070, Active islanding: During a grid AC outage, the inverter proactively detects islanding. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2072, Transient AC over-voltage: The inverter detects that the phase voltage exceeds the transient AC over-voltage protection threshold. Safe checks now: Record the alarm, cause ID if shown, and time; check only whether the property has grid supply and allow the inverter to recover. If it repeats, contact the installer; do not change protected grid settings. Installer remedy: A licensed installer should verify voltage at the grid connection point and its peak value. Contact the network operator if supply is too high; change the protection threshold only with network approval. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2077, Off-grid output overload: The off-grid output is overloaded or short-circuited. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2080, Abnormal PV module configuration: PV module configuration does not meet requirements, or the module output is reverse-connected or short-circuited. Cause IDs: 2: the string power, or the number of modules in series, exceeds the upper threshold; 3: the string voltage is low, or the number of modules in series is below the lower threshold; 6: the string or parallel connection is abnormal; 7: the string configuration has changed; 8: the sunlight is abnormal; 9: the string voltage exceeds the upper threshold. Safe checks now: Record the alarm, inverter indicators and software version if visible. Do not power-cycle, load firmware or alter communication wiring; contact the installer or Huawei support. Installer remedy: Contact your installer. Check that the total number of PV modules, the number per string, and the number of strings meet requirements, and that module output is not reverse-connected. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. - 2081, Optimiser fault: An optimiser is faulty (M2 manual, warning severity, cause ID 1). Safe checks now: Record the alarm, inverter indicators and software version if visible. Do not power-cycle, load firmware or alter communication wiring; contact the installer or Huawei support. Installer remedy: The M2 manual's step for this warning is to go to the optimiser information page and view the fault information. It gives no further procedure, so if the warning persists, contact your installer. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. - 2082, Grid-tied / off-grid controller abnormal: The inverter fails to communicate with the Smart Backup Box, or an unrecoverable fault has occurred inside the Smart Backup Box. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2085, Built-in PID operation abnormal: The output resistance of the PV arrays to ground is low, or the system insulation resistance is low. Safe checks now: Record the alarm and cause ID if shown, leave PV, AC and earthing wiring and isolators untouched, and contact the installer. Electrical measurements and recovery work require a licensed worker. Installer remedy: A licensed installer should follow the exact M2 or M3 manual's controlled diagnostic and recovery procedure for this alarm. Do not substitute a generic switching sequence; if the alarm persists after the documented check, preserve the event evidence and escalate to Huawei support. Applicability: confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2090, Abnormal active power scheduling instruction: The DI input is abnormal, or inconsistent with the configuration. Safe checks now: Record the alarm, inverter indicators and software version if visible. Do not power-cycle, load firmware or alter communication wiring; contact the installer or Huawei support. Installer remedy: A qualified installer should verify the DI-port wiring and active-power dry-contact mapping, then confirm the required mapping with the network operator. Applicability: confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 2091, Abnormal reactive power scheduling instruction: The DI input is abnormal, or inconsistent with the configuration. Safe checks now: Record the alarm, inverter indicators and software version if visible. Do not power-cycle, load firmware or alter communication wiring; contact the installer or Huawei support. Installer remedy: A qualified installer should verify the DI-port wiring and reactive-power dry-contact mapping, then confirm the required mapping with the network operator. Applicability: confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. - 61440, Monitoring unit faulty: The flash memory is insufficient, or it has bad sectors. Safe checks now: Record the alarm, inverter indicators and software version if visible. Do not power-cycle, load firmware or alter communication wiring; contact the installer or Huawei support. Installer remedy: A licensed installer should follow the exact M2 or M3 manual's controlled diagnostic and recovery procedure for this alarm. Do not substitute a generic switching sequence; if the alarm persists after the documented check, preserve the event evidence and escalate to Huawei support. Applicability: confirmed; SUN2000-(8KTL–20KTL)-M2; documented exact models SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, SUN2000-20KTL-M2; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(8KTL-20KTL)-M2 User Manual, Issue 06 (2022-03-10): Alarm List (Issue 06). The alarm list covers the six exact manual models. Australian-variant confirmation is narrower: it applies only to 8KTL-M2 and 10KTL-M2 unless a current exact-model source proves more; installed firmware remains unconfirmed. | confirmed; SUN2000-(20KTL–40KTL)-M3; documented exact models SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, SUN2000-40KTL-M3; Three-phase string inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-M3 User Manual, Issue 02 (2022-02-08): Alarm List (Issue 02). The alarm list covers the five exact M3 models. Installed Australian variant and firmware remain same-session checks rather than stored assumptions. --- ## Fronius: fault codes Source: https://wattbench.ai/fronius-error-codes A reference compiled by Wattbench from the current Fronius Symo / Eco operating instructions. Fronius reports faults as numbered State codes on the display or in Solar.web. This library preserves the Symo / Eco meaning of each listed state; the same number can mean something different on another Fronius family, so confirm the exact model before acting. Grid Voltage-Dependent Power Reduction (GVDPR / Volt-Watt) is not one of these numbered states — the cited operating instructions show it as a live derating reading under the display's INFO menu, not a State code; an earlier version of this library listed it as state "567", which this manual does not contain. Safety note: owners should record the state and stop at safe visual observations. DC/AC isolation, electrical measurements, settings, wiring and opening equipment are licensed-worker tasks, completed under the exact model and site procedure. - 102, AC voltage too high: The grid voltage measured at the inverter is above the safe threshold, so it disconnects to protect itself. The single most common Fronius state. Safe checks now: Note the state code, time and whether the property and neighbourhood have normal grid supply. The inverter should reconnect automatically when the grid returns to its permitted range; contact your installer if the state persists or repeats. Installer remedy: Check the grid connection and measured supply condition against the approved operating settings. If the supply is normal but the state persists, follow the Symo/Eco service path and escalate through the authorised network or Fronius process as applicable. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 103, AC voltage too low: The grid voltage is below the inverter's acceptable range. Safe checks now: Note the state code, time and whether the property and neighbourhood have normal grid supply. The inverter should reconnect automatically when the grid returns to its permitted range; contact your installer if the state persists or repeats. Installer remedy: Check the grid connection and measured supply condition against the approved operating settings. If the supply is normal but the state persists, follow the Symo/Eco service path and escalate through the authorised network or Fronius process as applicable. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 105, AC frequency too high: The grid frequency is above the acceptable range. Safe checks now: Note the state code, time and whether the property and neighbourhood have normal grid supply. The inverter should reconnect automatically when the grid returns to its permitted range; contact your installer if the state persists or repeats. Installer remedy: Check the grid connection and measured supply condition against the approved operating settings. If the supply is normal but the state persists, follow the Symo/Eco service path and escalate through the authorised network or Fronius process as applicable. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 106, AC frequency too low: The grid frequency is below the acceptable range. Safe checks now: Note the state code, time and whether the property and neighbourhood have normal grid supply. The inverter should reconnect automatically when the grid returns to its permitted range; contact your installer if the state persists or repeats. Installer remedy: Check the grid connection and measured supply condition against the approved operating settings. If the supply is normal but the state persists, follow the Symo/Eco service path and escalate through the authorised network or Fronius process as applicable. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 107, No AC grid / outside limits: No grid is available, or several grid parameters are out of range, so the inverter can't synchronise. Safe checks now: Note the state code, time and whether the property and neighbourhood have normal grid supply. The inverter should reconnect automatically when the grid returns to its permitted range; contact your installer if the state persists or repeats. Installer remedy: Check the grid connection and measured supply condition against the approved operating settings. If the supply is normal but the state persists, follow the Symo/Eco service path and escalate through the authorised network or Fronius process as applicable. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 108, Stand-alone operation detected: The inverter detected an islanding condition (running disconnected from the grid). Safe checks now: Note the state code, time and whether the property and neighbourhood have normal grid supply. The inverter should reconnect automatically when the grid returns to its permitted range; contact your installer if the state persists or repeats. Installer remedy: Check the grid connection and measured supply condition against the approved operating settings. If the supply is normal but the state persists, follow the Symo/Eco service path and escalate through the authorised network or Fronius process as applicable. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 112, RCMU error: An error in the residual-current monitoring unit (RCMU). Safe checks now: Record the exact state code, inverter model and time. Do not operate isolators, open the inverter or touch wiring; contact your installer if the state remains or returns. Installer remedy: Follow the exact-model diagnostic procedure and preserve the state history. If the state remains, arrange assessment by a Fronius-trained service technician rather than repeatedly restarting the inverter. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 301, Overcurrent (AC): A momentary AC over-current inside the inverter. Safe checks now: Record the state code and wait for the inverter's automatic start-up attempt. Do not operate isolators or open the inverter; contact your installer if the state remains or returns. Installer remedy: Follow the exact-model diagnostic procedure and preserve the state history. If the state remains, arrange assessment by a Fronius-trained service technician rather than repeatedly restarting the inverter. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 302, Overcurrent (DC): A momentary DC over-current inside the inverter. Safe checks now: Record the state code and wait for the inverter's automatic start-up attempt. Do not operate isolators or open the inverter; contact your installer if the state remains or returns. Installer remedy: Follow the exact-model diagnostic procedure and preserve the state history. If the state remains, arrange assessment by a Fronius-trained service technician rather than repeatedly restarting the inverter. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 303, DC module over-temperature: The DC power stage is too hot: usually blocked ventilation, high ambient temperature, or units mounted too close. Safe checks now: From a safe position, check that the external cooling openings are not visibly obstructed and allow the inverter to cool. Do not open the unit; contact your installer if the state persists. Installer remedy: Purge the cooling openings and heat sink under the product maintenance procedure. If the temperature state returns after airflow is restored, arrange Fronius-trained service. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 304, AC module over-temperature: The AC power stage is too hot, same causes as 303. Safe checks now: From a safe position, check that the external cooling openings are not visibly obstructed and allow the inverter to cool. Do not open the unit; contact your installer if the state persists. Installer remedy: Purge the cooling openings and heat sink under the product maintenance procedure. If the temperature state returns after airflow is restored, arrange Fronius-trained service. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 306 · POWER LOW, PV output too low: The intermediate-circuit voltage is too low to feed in, usually just low light. Safe checks now: Wait for stronger daylight. This state is expected when solar input is too low and should clear automatically; contact your installer if it remains in good sunlight. Installer remedy: Confirm whether the state occurs only at sunrise, sunset or low irradiance. If it recurs with sufficient insolation, preserve the state history and have the system engineer check the PV input under the exact-model procedure. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 307 · DC LOW, DC input voltage too low: The DC input voltage is too low for grid feed-in. Safe checks now: Wait for stronger daylight. This state is normal around sunrise and sunset and should clear automatically; contact your installer if it remains in good sunlight. Installer remedy: Confirm whether the state occurs only at sunrise, sunset or low irradiance. If it recurs with sufficient insolation, preserve the state history and have the system engineer check the PV input under the exact-model procedure. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 309, DC input voltage MPPT 1 too high: The DC voltage on tracker 1 exceeds the inverter's maximum. Safe checks now: Leave the inverter and PV wiring alone, record that MPPT 1 is named and contact your installer promptly. Do not reset the inverter or operate isolators to test whether it clears. Installer remedy: Treat this as an exact-model Symo/Eco DC-input overvoltage state. Under the approved safe-isolation procedure, verify the MPPT 1 string design against the exact inverter input limit before reconnection; escalate through the Fronius service path if required. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 311, DC string polarity reversed: A DC string is wired with reversed polarity. Safe checks now: Leave the inverter and PV wiring alone, record the state and contact your installer promptly. Do not attempt to correct or test a live PV string. Installer remedy: Under the approved safe-isolation procedure, identify the affected Symo/Eco string and correct its reversed polarity before reconnection. Preserve the state history and exact model details. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 313, DC input voltage MPPT 2 too high: The DC voltage on tracker 2 exceeds the inverter's maximum. Safe checks now: Leave the inverter and PV wiring alone, record that MPPT 2 is named and contact your installer promptly. Do not reset the inverter or operate isolators to test whether it clears. Installer remedy: Treat this as an exact-model Symo/Eco DC-input overvoltage state. Under the approved safe-isolation procedure, verify the MPPT 2 string design against the exact inverter input limit before reconnection; escalate through the Fronius service path if required. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 326 · 327, Fan error: A cooling-fan fault (fan 1 or fan 2). Safe checks now: From a safe position, check that the external fan area is not visibly obstructed. Do not touch the fan or open the inverter; contact your installer if the state remains. Installer remedy: Inspect the named fan and ventilation path under the product maintenance procedure. If the fan state persists, arrange replacement through a Fronius-trained service technician. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 425, No communication with power stage: The control can't communicate with the power-stage set. Safe checks now: Record the exact state code, inverter model and time. Do not operate isolators, open the inverter or touch wiring; contact your installer if the state remains or returns. Installer remedy: Update the inverter firmware through the authorised procedure where applicable. If communication with the power-stage set remains unavailable, arrange Fronius-trained service. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 436, Board incompatibility: Functional incompatibility between PC boards (often after a component replacement). Safe checks now: Record the exact state code, inverter model and time. Do not operate isolators, open the inverter or touch wiring; contact your installer if the state remains or returns. Installer remedy: Confirm the installed boards are compatible and update inverter firmware through the authorised procedure. If the incompatibility remains, arrange Fronius-trained service. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 443, Intermediate-circuit voltage fault: The intermediate-circuit voltage is too low or asymmetric. Safe checks now: Record the exact state code, inverter model and time. Do not operate isolators, open the inverter or touch wiring; contact your installer if the state remains or returns. Installer remedy: Follow the exact-model diagnostic procedure and preserve the state history. If the state remains, arrange assessment by a Fronius-trained service technician rather than repeatedly restarting the inverter. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 447, Insulation fault: An insulation fault in the inverter or PV array. Safe checks now: Record the state code, time and weather conditions. Do not reset the inverter or touch PV wiring; arrange a licensed inspection if the insulation state remains or returns. Installer remedy: Follow the Symo/Eco insulation-fault diagnostic under the approved safe-isolation procedure. If the state persists, arrange assessment by a Fronius-trained service technician. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 448, Neutral conductor not connected: The neutral wire is not connected. Safe checks now: Do not reset the inverter or touch the switchboard or wiring. Record the state and arrange attendance by your installer or a licensed electrician. Installer remedy: Under the approved safe-isolation procedure, verify and rectify the neutral connection before returning the Symo/Eco inverter to service. Escalate through Fronius service if the state remains. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 450, Guard cannot be found: The safety guard module was not detected. Safe checks now: Record the exact state code, inverter model and time. Do not operate isolators, open the inverter or touch wiring; contact your installer if the state remains or returns. Installer remedy: Follow the exact-model diagnostic procedure and preserve the state history. If the state remains, arrange assessment by a Fronius-trained service technician rather than repeatedly restarting the inverter. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 452, Processor communication error: A communication error between the inverter's processors. Safe checks now: Record the exact state code, inverter model and time. Do not operate isolators, open the inverter or touch wiring; contact your installer if the state remains or returns. Installer remedy: Follow the exact-model diagnostic procedure and preserve the state history. If the state remains, arrange assessment by a Fronius-trained service technician rather than repeatedly restarting the inverter. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 463, Reversed AC polarity: The AC connector is inserted incorrectly or the phase is reversed. Safe checks now: Do not reset the inverter or touch the AC connector or switchboard wiring. Record the state and arrange attendance by your installer or a licensed electrician. Installer remedy: Under the approved safe-isolation procedure, verify the Symo/Eco AC connector orientation and phase polarity, rectify the connection and complete the documented commissioning checks before return to service. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 502, Insulation error on the PV modules: An insulation fault between the array (DC+/DC−) and earth, frequently in damp or rainy weather. Safe checks now: Record the state code, time and weather conditions. Do not reset the inverter or touch PV connectors or wiring; arrange a licensed inspection if the state remains or returns. Installer remedy: Follow the Symo/Eco PV-module insulation diagnostic under the approved safe-isolation procedure. Inspect the array and cabling as directed, and return the system to service only after the insulation condition is resolved. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 509, No feed-in for 24 hours: The inverter hasn't fed energy into the grid in the past 24 hours. Safe checks now: From a safe position, note whether the modules are visibly obstructed and whether another state is active. Contact your installer if there has still been no feed-in after normal daylight returns. Installer remedy: Acknowledge the state, check the feed-in conditions identified by the manual and review other active states. If generation does not resume under normal conditions, follow the exact-model diagnostic path. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 516, No communication with storage unit: The inverter can't communicate with the connected battery/storage unit. Safe checks now: Record the exact state code, inverter model and time. Do not operate isolators, open the inverter or touch wiring; contact your installer if the state remains or returns. Installer remedy: Follow the exact-model diagnostic procedure and preserve the state history. If the state remains, arrange assessment by a Fronius-trained service technician rather than repeatedly restarting the inverter. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. - 517, Power derating by temperature: The inverter is reducing output because it's too hot. Safe checks now: From a safe position, check that the external cooling openings are not visibly obstructed and allow the inverter to cool. Do not open the unit; contact your installer if derating persists. Installer remedy: Purge the cooling openings and heat sink under the product maintenance procedure. If temperature derating remains after airflow is restored, arrange Fronius-trained service. Applicability: confirmed; Fronius Symo / Fronius Eco; documented exact models Fronius Symo 3.0-3-S, Fronius Symo 3.7-3-S, Fronius Symo 4.5-3-S, Fronius Symo 3.0-3-M, Fronius Symo 3.7-3-M, Fronius Symo 4.5-3-M, Fronius Symo 5.0-3-M, Fronius Symo 6.0-3-M, Fronius Symo 7.0-3-M, Fronius Symo 8.2-3-M, Fronius Symo 10.0-3-M, Fronius Symo 10.0-3-M-OS, Fronius Symo 12.5-3-M, Fronius Symo 15.0-3-M, Fronius Symo 17.5-3-M, Fronius Symo 20.0-3-M, Fronius Eco 25.0-3-S, Fronius Eco 27.0-3-S; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Fronius Symo / Fronius Eco Operating Instructions: Status diagnosis and troubleshooting (official) (044-17072025). The current e-manual names these 18 Symo/Eco models and the three-phase grid-tied inverter role. Exact installed variant and firmware applicability still require a nameplate and current-source check. --- ## SMA: fault codes Source: https://wattbench.ai/sma-error-codes A reference compiled by Wattbench from SMA documentation. SMA reports faults as numbered event codes on the inverter display or in Sunny Portal / SMA 360°. Source-linked homeowner and installer remedies are reviewed for the Australian Sunny Tripower X 12/15/20/25 (STP12-50–STP25-50) family. Other grouped Sunny Boy and earlier-family records remain searchable reference and do not inherit Tripower X applicability. Safety: owners should record the event and stop at safely visible conditions. DC/AC switching, wiring, insulation tests, protected parameters and opening equipment are licensed-installer tasks. - 101 · 102 · 103 · 105, Grid voltage / impedance too high: The grid voltage or grid impedance at the inverter's connection point is too high, so it disconnects. Safe checks now: Record the event and time, check only whether the property has grid supply, and allow the inverter to recover. If it repeats, contact the installer; do not change the country dataset or protected grid parameters. Installer remedy: Usually a network issue rather than a faulty inverter. Confirm the country dataset is correct and the grid voltage is in range; if it's frequently high, contact your installer or network operator. It self-restores when voltage returns to range. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. - 202 · 203 · 205, Grid disconnected / voltage too low: The grid has been disconnected, the AC cable is damaged, or the grid voltage is too low. Fix: Check the AC circuit breaker / main switch is on and the grid is present. If the grid is fine and it persists, have an installer inspect the AC cable and connections. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 301, 10-minute average voltage out of range: The ten-minute average grid voltage is outside the permissible range. Safe checks now: Record the event and time, check only whether the property has grid supply, and allow the inverter to recover. If it repeats, contact the installer; do not change the country dataset or protected grid parameters. Installer remedy: Monitor the grid voltage during operation. If it's persistently out of range due to local conditions, contact your network operator. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. - 302, Power reduced: high AC voltage: The inverter has reduced its output because the grid voltage is high (Volt-Watt response, to support grid stability). Safe checks now: Record the event and time, check only whether the property has grid supply, and allow the inverter to recover. If it repeats, contact the installer; do not change the country dataset or protected grid parameters. Installer remedy: Expected behaviour when grid voltage is high, not a fault. If it happens often it's costing you generation. Your network voltage is high; contact your installer or network operator. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. - 401 · 404, Islanding / frequency change: A stand-alone (islanded) grid or a very large change in grid frequency was detected. Safe checks now: Record the event and time, check only whether the property has grid supply, and allow the inverter to recover. If it repeats, contact the installer; do not change the country dataset or protected grid parameters. Installer remedy: Usually a short-term grid event that self-clears. If it recurs, have your installer check the grid connection for frequency fluctuations. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. - 501, Grid frequency out of range: The power frequency is outside the permissible range. Safe checks now: Record the event and time, check only whether the property has grid supply, and allow the inverter to recover. If it repeats, contact the installer; do not change the country dataset or protected grid parameters. Installer remedy: Monitor the frequency. If fluctuations are frequent, common on a backup generator, contact your network operator. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. - 507, Power reduced: high AC frequency: The inverter has reduced its output because the grid frequency is too high, to support grid stability. Safe checks now: Record the event and time, check only whether the property has grid supply, and allow the inverter to recover. If it repeats, contact the installer; do not change the country dataset or protected grid parameters. Installer remedy: A grid-side condition, not an inverter fault. If possible, check the grid frequency and observe how often fluctuations occur. If they are frequent and this message is displayed often, contact the grid operator and request approval to change the inverter's operating parameters; if they approve, discuss any change with SMA Service first. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. - 601, Excess DC in grid current: The inverter detected an excessively high proportion of direct current in the grid current. Safe checks now: Record the event and time, check only whether the property has grid supply, and allow the inverter to recover. If it repeats, contact the installer; do not change the country dataset or protected grid parameters. Installer remedy: A licensed installer should verify the event, grid-current condition and current country dataset against the STPxx-50 event manual. Do not raise a monitoring threshold without the required network approval; escalate a recurring event to SMA service. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. - 901, Grounding (PE) connection missing: The protective-earth (grounding) conductor is not correctly connected. Fix: An electrical-safety fault. Have a licensed electrician or installer check the earth connection against the installation manual. Don't keep resetting it. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 1001, Line and neutral swapped: The L (active) and N (neutral) connections are swapped. Safe checks now: Record the event, leave AC, PV and earthing wiring and isolators untouched, and contact the installer. Wiring and insulation checks require a licensed worker. Installer remedy: A wiring fault. Have your installer correct the L and N connections per the installation manual. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. - 1302, Waiting for grid voltage: L or N is not connected (or an AC conductor is damaged), often simply a mains outage. Safe checks now: Record the event and time, check only whether the property has grid supply, and allow the inverter to recover. If it repeats, contact the installer; do not change the country dataset or protected grid parameters. Installer remedy: If there's a power cut, it clears when supply returns. Otherwise check the AC main switch is on and the breaker hasn't tripped; if it persists, have an installer check the AC conductors. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. - 1501, Reconnection fault (country dataset): A changed country dataset or parameter value doesn't match local requirements. Safe checks now: Record the event and leave protected settings and self-test controls to the responsible installer. Contact the installer if the event blocks operation or repeats. Installer remedy: The responsible installer should verify the Australian country dataset and protected parameter state against the STPxx-50 manual. Use authorised credentials only for an approved change; do not alter grid settings merely to clear the event. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. - 3301 · 3302 · 3303, Unstable operation (low DC): There isn't enough power at the DC input for stable operation. Fix: Often just low light, shading, or snow on the array. Check the panels are clear and the array is error-free; if it persists in good sun, contact your installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3401 · 3402 · 3407, DC over-voltage: Over-voltage at the DC input. This can destroy the inverter. Fix: Switch off the DC isolator and contact your installer immediately. The DC input voltage is above the inverter's maximum. The string is likely sized too long and must be corrected by a professional before reconnection. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3501, Insulation failure (ground fault): A ground fault / low insulation resistance detected on the DC (PV) side, safety-critical, and common in wet weather. Safe checks now: Record the event, leave AC, PV and earthing wiring and isolators untouched, and contact the installer. Wiring and insulation checks require a licensed worker. Installer remedy: A licensed installer should follow the STPxx-50 event procedure to locate and rectify the PV insulation or residual-current cause under safe isolation. Clear the event only after the fault is corrected; do not transfer a Sunny Boy reset instruction to this Tripower X record. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. - 3701, Residual current too high: The inverter detected an excessive residual (earth-leakage) current, an electric-shock hazard. Safe checks now: Record the event, leave AC, PV and earthing wiring and isolators untouched, and contact the installer. Wiring and insulation checks require a licensed worker. Installer remedy: A licensed installer should follow the STPxx-50 event procedure to locate and rectify the PV insulation or residual-current cause under safe isolation. Clear the event only after the fault is corrected; do not transfer a Sunny Boy reset instruction to this Tripower X record. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. - 3801 · 3802 · 3805, DC over-current: Over-current at the DC input; the inverter briefly interrupts feed-in. Fix: If it's frequent, have your installer verify the PV array is correctly rated and wired (and check for a short circuit). Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3901 · 3902, Waiting for DC start conditions: The conditions for feeding into the grid aren't yet met, typically insufficient irradiation. Safe checks now: Note the time and check only for safely visible shading or low light. If the event remains in good daylight, contact the installer; do not operate isolators. Installer remedy: Normal early/late in the day. Make sure the array isn't covered or shaded; if it persists in good sun, contact your installer. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. - 6501 · 6502 · 6509, Over-temperature: The inverter has switched off (or derated) due to excessive temperature. Fix: Clear dust from the cooling fins and air ducts, ensure good ventilation, and keep the ambient temperature within limits (and the unit out of direct sun). If it persists, contact your installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 6512, Minimum operating temperature not reached: It's too cold. The inverter only resumes feed-in once the temperature reaches at least −25 °C. Safe checks now: No action is normally required. Record the event and allow the inverter to resume when its operating temperature is reached. Installer remedy: No action needed; it resumes automatically as the temperature rises. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. - 7500 · 7501, Fan fault: A cooling fan is not functioning properly. Fix: Check the fan area for blockage. If the fan is faulty it needs service. Contact your installer or SMA Service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 7701 · 7702 · 7703, Grid relay defect: The grid disconnection relay is defective or failed its test. Fix: A hardware fault. Contact SMA Service or your installer. If shown only occasionally, note whether it recurs. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8003, Power reduced: temperature: The inverter has reduced output for more than ten minutes because of excessive temperature. Fix: Clean the cooling fins and air ducts, ensure adequate ventilation, and keep the ambient temperature within the rated limit. If it recurs, contact your installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 9002, Installer code invalid: The SMA Grid Guard code entered is incorrect, so the protected operating parameters stay locked. Safe checks now: Record the event and leave protected settings and self-test controls to the responsible installer. Contact the installer if the event blocks operation or repeats. Installer remedy: The responsible installer should verify the Australian country dataset and protected parameter state against the STPxx-50 manual. Use authorised credentials only for an approved change; do not alter grid settings merely to clear the event. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. - 9003, Grid parameters locked: Changes to the grid parameters are now blocked (they require the Grid Guard code). Safe checks now: Record the event and leave protected settings and self-test controls to the responsible installer. Contact the installer if the event blocks operation or repeats. Installer remedy: The responsible installer should verify the Australian country dataset and protected parameter state against the STPxx-50 manual. Use authorised credentials only for an approved change; do not alter grid settings merely to clear the event. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. - 9007, Self-test aborted: The inverter's self-test was terminated. Safe checks now: Record the event and leave protected settings and self-test controls to the responsible installer. Contact the installer if the event blocks operation or repeats. Installer remedy: A licensed installer should ensure the AC connection is correct and the country dataset has been entered correctly, then restart the self-test, as the STPxx-50 event entry sets out. Applicability: confirmed; Sunny Tripower X 12/15/20/25; documented exact models STP12-50, STP15-50, STP20-50, STP25-50; Three-phase string inverter; documentation region Australia; STP12-50–STP25-50; firmware 2.06.04.R or later; manual SMA Sunny Tripower X (STPxx-50) event messages. Remedies apply only to grouped records whose complete displayed code set appears in the STPxx-50 event manual. Mixed groups containing unsupported event numbers remain unconverted, and installed firmware must be checked against the stated minimum. --- ## Sungrow: fault codes Source: https://wattbench.ai/sungrow-alarm-codes A reference compiled by Wattbench from publicly available Sungrow inverter documentation. Source-linked homeowner and installer remedies are reviewed for the current Australian SH5T–SH25T three-phase hybrid family only. The wider library preserves string-inverter, earlier SH/RT/RS, battery and BDC codes as searchable reference; those entries do not inherit current-T applicability unless a remedy names the current-T manual. Codes that share a single cause and remedy are grouped. Every individual code number is still listed and searchable. Safety note: owners should stop at recording the code, app status and safely visible conditions. DC/AC isolation, electrical measurements, protection settings, wiring and opening equipment are licensed-worker tasks. Any shutdown or restart must follow the exact model and site procedure; this library is not a switching sequence. - 002, Grid over-voltage: The grid voltage exceeds the protective value. Safe checks now: Record the code and time, check only whether the property still has grid supply, and allow the inverter to reconnect automatically. If it repeats, contact the installer; do not change protection settings. Installer remedy: A licensed installer should verify the measured grid condition and AC connection using the current SH5T–SH25T manual. Preserve the approved country profile and protection limits; escalate a confirmed out-of-range supply to the network service provider rather than widening settings without approval. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 003, Transient over-voltage: The grid transient voltage exceeds the inverter's allowable upper limit. Safe checks now: Record the code and time and allow the inverter to recover automatically. If it repeats, contact the installer; do not change protection settings. Installer remedy: A licensed installer should verify the measured grid condition and AC connection using the current SH5T–SH25T manual. Preserve the approved country profile and protection limits; escalate a confirmed out-of-range supply to the network service provider rather than widening settings without approval. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 004, Grid under-voltage: The grid voltage is below the protective value. Safe checks now: Record the code and time, check only whether the property still has grid supply, and allow the inverter to reconnect automatically. If it repeats, contact the installer; do not change protection settings. Installer remedy: A licensed installer should verify the measured grid condition and AC connection using the current SH5T–SH25T manual. Preserve the approved country profile and protection limits; escalate a confirmed out-of-range supply to the network service provider rather than widening settings without approval. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 005, Grid under-voltage (lower threshold): The grid voltage is below the protective value, lower than the threshold for code 004. Safe checks now: Record the code and time, check only whether the property still has grid supply, and allow the inverter to reconnect automatically. If it repeats, contact the installer; do not change protection settings. Installer remedy: A licensed installer should verify the measured grid condition and AC connection using the current SH5T–SH25T manual. Preserve the approved country profile and protection limits; escalate a confirmed out-of-range supply to the network service provider rather than widening settings without approval. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 006, AC over-current: The AC output current exceeds the inverter's allowable upper limit. Fix: The inverter resumes once the output current falls below the protection value. If the fault persists, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 007, Transient AC over-current: A transient AC over-current was detected. Fix: The inverter self-recovers after a few seconds. If the fault persists, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 008, Grid over-frequency: The grid frequency exceeds the protective value. Safe checks now: Record the code and time and allow the inverter to reconnect when the grid stabilises. If it repeats, contact the installer; do not change protection settings. Installer remedy: A licensed installer should verify the measured grid condition and AC connection using the current SH5T–SH25T manual. Preserve the approved country profile and protection limits; escalate a confirmed out-of-range supply to the network service provider rather than widening settings without approval. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 009, Grid under-frequency: The grid frequency is below the protective value. Safe checks now: Record the code and time and allow the inverter to reconnect when the grid stabilises. If it repeats, contact the installer; do not change protection settings. Installer remedy: A licensed installer should verify the measured grid condition and AC connection using the current SH5T–SH25T manual. Preserve the approved country profile and protection limits; escalate a confirmed out-of-range supply to the network service provider rather than widening settings without approval. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 010, Grid failure (islanding): A grid failure or islanding condition was detected. Safe checks now: Record the code and time and check only whether the property has grid supply. If supply is present and the alarm remains, contact the installer; do not operate switchboard equipment. Installer remedy: A licensed installer should verify the measured grid condition and AC connection using the current SH5T–SH25T manual. Preserve the approved country profile and protection limits; escalate a confirmed out-of-range supply to the network service provider rather than widening settings without approval. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 011, DC injection over-current: The DC current injected into the AC output exceeds the upper limit. Fix: Wait a moment for the inverter to recover. If the fault occurs repeatedly, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 012, Leakage current over-current: The leakage current exceeds the inverter's allowable upper limit. Safe checks now: Record the code and any safely visible conditions, leave PV wiring and isolators untouched, and contact the installer if the alarm repeats. Installer remedy: A licensed installer should follow the current SH5T–SH25T manual to test the indicated PV voltage, polarity, insulation or earthing condition under safe isolation. Rectify the cause before returning the inverter to service; do not bypass protection or use repeated resets as a remedy. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 013, Grid abnormal: The grid voltage or frequency is outside the permissible range, so the inverter cannot connect to the grid. Safe checks now: Record the code and time and allow the inverter to reconnect when the grid stabilises. If it repeats, contact the installer; do not change protection settings. Installer remedy: A licensed installer should verify the measured grid condition and AC connection using the current SH5T–SH25T manual. Preserve the approved country profile and protection limits; escalate a confirmed out-of-range supply to the network service provider rather than widening settings without approval. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 014, 10-minute grid over-voltage: The average grid voltage over 10 minutes exceeds the permissible range. Safe checks now: Record the code and time and allow the inverter to reconnect when the grid stabilises. If it repeats, contact the installer; do not change protection settings. Installer remedy: A licensed installer should verify the measured grid condition and AC connection using the current SH5T–SH25T manual. Preserve the approved country profile and protection limits; escalate a confirmed out-of-range supply to the network service provider rather than widening settings without approval. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 015, Grid over-voltage (higher threshold): The grid voltage exceeds the protective value, higher than the threshold for code 002. Safe checks now: Record the code and time and allow the inverter to reconnect when the grid stabilises. If it repeats, contact the installer; do not change protection settings. Installer remedy: A licensed installer should verify the measured grid condition and AC connection using the current SH5T–SH25T manual. Preserve the approved country profile and protection limits; escalate a confirmed out-of-range supply to the network service provider rather than widening settings without approval. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 016, High bus voltage / power: The bus voltage or power is high. Fix: Wait a moment for the inverter to recover. If the fault occurs repeatedly, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 017, Grid voltage unbalance: Unbalanced three-phase grid voltage was detected. Safe checks now: Record the code and time and allow the inverter to reconnect when the grid stabilises. If it repeats, contact the installer; do not change protection settings. Installer remedy: A licensed installer should verify the measured grid condition and AC connection using the current SH5T–SH25T manual. Preserve the approved country profile and protection limits; escalate a confirmed out-of-range supply to the network service provider rather than widening settings without approval. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 019, Bus transient over-voltage: The transient bus voltage exceeds the inverter's allowable upper limit. Fix: Wait a moment for the inverter to recover. If the fault occurs repeatedly, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 020, Bus over-voltage: The bus voltage exceeds the inverter's allowable upper limit. Fix: Wait a moment for the inverter to recover. If the fault occurs repeatedly, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 021, PV1 input over-current: The PV1 input over-current limit was exceeded. Fix: Check the PV1 input layout and wiring. Contact your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 022, PV2 input over-current: The PV2 input over-current limit was exceeded. Fix: Check the PV2 input layout and wiring. Contact your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 024, Neutral point voltage imbalance: The deviation of the neutral point voltage exceeds the allowable limit. Fix: The inverter recovers once the deviation falls below the protective limit. Wait a moment for recovery or restart the system. If the fault persists, contact your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 024–025 · 030–034 · 040–042 · 050 · 060 · 076 · 116–117, Device abnormal: An internal device abnormality was detected. (Sungrow groups these codes under a single remedy.) Fix: Wait for the inverter to recover. Disconnect the AC and DC switches or circuit breakers, then reconnect them after 15 minutes. If the alarm persists, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 028, PV1 reverse connection: PV1 is connected with reversed polarity. Safe checks now: Record the code, leave PV cables and isolators untouched, and contact the installer. Reversed-polarity checks are electrical work. Installer remedy: A licensed installer should follow the current SH5T–SH25T manual to test the indicated PV voltage, polarity, insulation or earthing condition under safe isolation. Rectify the cause before returning the inverter to service; do not bypass protection or use repeated resets as a remedy. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 029, PV2 reverse connection: PV2 is connected with reversed polarity. Safe checks now: Record the code, leave PV cables and isolators untouched, and contact the installer. Reversed-polarity checks are electrical work. Installer remedy: A licensed installer should follow the current SH5T–SH25T manual to test the indicated PV voltage, polarity, insulation or earthing condition under safe isolation. Rectify the cause before returning the inverter to service; do not bypass protection or use repeated resets as a remedy. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 036, Radiator over-temperature: The radiator (heat sink) temperature is too high. Fix: Check the ambient temperature, ensure adequate ventilation space, avoid direct sunlight, verify the fan operates, and clean the air inlets. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 037, Internal inverter over-temperature: The internal temperature of the inverter is too high. Safe checks now: Record the code and check only for safely visible blocked ventilation or direct sun. Do not open or clean inside the inverter; contact the installer if it remains after the unit cools. Installer remedy: A licensed installer should verify the current SH5T–SH25T clearance, ventilation, ambient-temperature and fan requirements, then correct the indicated cooling condition. Escalate a recurring event in compliant conditions to Sungrow rather than opening or modifying the inverter. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 038, Grid-side relay fault: A relay fault on the grid side was detected. Fix: Wait a moment for the inverter to recover. If the fault occurs repeatedly, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 039, Low PV-to-earth insulation resistance: The insulation resistance of the PV array to earth is low. Safe checks now: Record the code and whether conditions are wet, leave PV wiring and isolators untouched, and contact the installer. Insulation testing is electrical work. Installer remedy: A licensed installer should follow the current SH5T–SH25T manual to test the indicated PV voltage, polarity, insulation or earthing condition under safe isolation. Rectify the cause before returning the inverter to service; do not bypass protection or use repeated resets as a remedy. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 041, Leakage current sampling fault: The leakage-current sampling circuit faulted. Fix: Wait a moment for the inverter to recover. If the fault occurs repeatedly, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 043, Inner under-temperature fault: The ambient temperature inside the inverter is too low. Fix: The inverter recovers once the ambient temperature rises above −25 °C. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 044, Inverter self-test fault: The inverter self-test failed. Fix: Wait a moment for the inverter to recover. If the fault occurs repeatedly, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 045, PV1 boost circuit fault: A fault was detected in the PV1 boost circuit. Fix: Wait a moment for the inverter to recover. If the fault occurs repeatedly, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 046, PV2 boost circuit fault: A fault was detected in the PV2 boost circuit. Fix: Wait a moment for the inverter to recover. If the fault occurs repeatedly, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 047, PV inputs error: The PV inputs order is incorrect. Fix: Stop and disconnect the inverter. Contact your solar installer to reset the PV inputs order. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 048, Phase current sampling fault: The phase-current sampling circuit faulted. Fix: Wait a moment for the inverter to recover. If the fault occurs repeatedly, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 051, Load over-power (off-grid mode): The load power exceeds the limit in off-grid mode. Safe checks now: Reduce ordinary non-essential loads on the backed-up circuits. If the alarm remains, contact the installer; do not operate switchboard equipment or inverter isolators. Installer remedy: A licensed installer should compare the connected backup or controlled load with the current SH5T–SH25T rating and documented control configuration. Correct the load or command path without defeating protection, then escalate a recurring event to Sungrow. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 052, INV under-voltage (off-grid mode): Inverter under-voltage fault in off-grid mode. Fix: Wait 5 minutes for recovery, or restart the system. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 053, Slave DSP grid over-voltage detection: The slave DSP detected that the grid voltage exceeds the inverter's allowable upper limit. Fix: Check the grid voltage. Contact the utility company if it exceeds the range, otherwise Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 054, Slave DSP grid over-frequency detection: The slave DSP detected that the grid frequency exceeds the inverter's allowable upper limit. Fix: Check the grid frequency. Contact the utility company if it exceeds the range, otherwise Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 056, Slave DSP leakage current detection: The slave DSP detected that the leakage current exceeds the inverter's allowable upper limit. Fix: Check for PV string ground faults. Contact Sungrow or your solar installer if it repeats. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 059, Master–slave DSP communication alarm: A communication alarm between the master and slave DSP. Fix: Wait 1 minute for the inverter to recover. If the fault persists, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 061, No inverter model setting: No inverter model has been set. Fix: Contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 062, STB5K backup box DI fault: A DI fault of the STB5K backup box. Fix: Check the DI connection between the inverter and the backup box. Wait 5 minutes for recovery. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 063, CPLD version undetectable: The version of the CPLD (complex programmable logic device) cannot be detected. Fix: Power off the system and program the CPLD. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 064, INV over-voltage (off-grid mode): Inverter over-voltage fault in off-grid mode. Fix: Wait 5 minutes for recovery, or restart the system. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 065, INV under-frequency (off-grid mode): Inverter under-frequency fault in off-grid mode (default value 47 Hz). Fix: Wait 5 minutes for recovery, or restart the system. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 066, INV over-frequency (off-grid mode): Inverter over-frequency fault in off-grid mode (default value 52 Hz). Fix: Wait 5 minutes for recovery, or restart the system. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 067, Temporary grid over-voltage (off-grid mode): A temporary grid over-voltage in off-grid mode. Fix: Wait 5 minutes for recovery, or restart the system. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 070, Defective fans: The fans are defective (−D series only). Fix: Stop the inverter and disconnect the cables. Check for a blocked fan duct, and replace the fans if necessary. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 071, SPD alarm: AC: An AC surge protection device (SPD) alarm. Fix: Check the SPD and replace it if necessary. Contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 072, SPD alarm: DC: A DC surge protection device (SPD) alarm. Fix: Check the SPD and replace it if necessary. Contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 075, Parallel inverter RS485 communication error: An RS485 communication error between two inverters in parallel. Fix: Check the RS485 cable connection and the parallel settings in the LCD menu. Contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 078–079, PV string abnormal: A PV string is abnormal. Fix: Check whether the string needs to be connected, verify a reliable connection, and check the DC fuse status. Contact your installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 083, Fan 2 abnormal speed warning: Fan 2 is running at an abnormal speed. Fix: Check whether the fan is blocked. Restart the system. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 084, Energy Meter reverse cable connection: The Energy Meter cable connection is reversed. Fix: Check the power-cable polarity, verify the “Existing Inverter” setting, and check the CT clamp placement for a single-phase sensor. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 085, Mismatched software version: The software versions do not match. Fix: Contact Sungrow. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 087, AFCI abnormal: The arc-fault detection (AFCI) module is abnormal. Fix: The inverter can operate normally. Check whether the related cable connections and terminals are abnormal, and whether the ambient environment is abnormal; take corrective measures if so. If the alarm persists, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 088, Arc fault: A DC arc fault was detected. Fix: Disconnect the DC inputs and check the cables for damage, the terminal connections, the fuses, and for burnt modules. Reconnect and clear the alarm via the app. Contact your installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 089, AFCI function disabled: The AFCI function is disabled. Fix: Enable the AFCI function via the app and the inverter will recover. If the alarm persists, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 100, AC output over-current: The AC output current exceeds the upper limit. Fix: The inverter resumes once the output current falls below the protection value. If the fault persists, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 101, Grid over-frequency (higher threshold): The grid frequency exceeds the protective value, higher than the threshold for code 008. Fix: Check the grid frequency. Contact the utility company if it exceeds the range, otherwise Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 102, Grid under-frequency (lower threshold): The grid frequency is below the protective value, lower than the threshold for code 009. Fix: Check the grid frequency. Contact the utility company if it exceeds the range, otherwise Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 105, SPI auto-test fault (Italy only): The SPI auto-test failed (Italy only). Fix: Restart the system and re-run the auto-test if necessary. If the fault persists, contact Sungrow for a solution. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 106, Abnormal grounding: Neither the PE terminal on the AC connection block nor the second PE terminal on the enclosure is reliably connected. Safe checks now: Record the code, leave earthing conductors and equipment untouched, and contact the installer. Installer remedy: A licensed installer should follow the current SH5T–SH25T manual to test the indicated PV voltage, polarity, insulation or earthing condition under safe isolation. Rectify the cause before returning the inverter to service; do not bypass protection or use repeated resets as a remedy. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 107, DC injection over-voltage (off-grid mode): The DC injection of the inverter voltage exceeds the upper limit, in off-grid mode. Fix: The inverter recovers once the DC injection voltage falls below the recovery value. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 113, Temporary bypass over-current: A temporary over-current on the bypass path. Fix: Check the BACKUP-port load power against the upper limit. Wait for recovery or restart. Contact Sungrow if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 200, Bus hardware over-voltage: The bus voltage exceeds the hardware protective value. Fix: Wait for the inverter to recover once the bus voltage drops. If the fault occurs repeatedly, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 201, Bus voltage too low: The bus voltage is too low. Fix: Wait a moment for the inverter to recover. If the fault occurs repeatedly, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 202, PV hardware over-current: The PV1 or PV2 current exceeds the hardware protective value. Fix: Contact Sungrow or your solar installer if it repeats. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 203, PV input voltage exceeds bus voltage: The PV input voltage exceeds the bus voltage. Fix: Check the PV connection terminal functionality. Contact your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 204, PV1 boost short-circuit fault: A short-circuit fault in the PV1 boost stage. Fix: The inverter may be damaged. Contact Sungrow for a solution. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 205, PV2 boost short-circuit fault: A short-circuit fault in the PV2 boost stage. Fix: The inverter may be damaged. Contact Sungrow for a solution. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 300, INV over-temperature: Inverter over-temperature fault. Fix: Check and clean the heat sink, verify the inverter is not in direct sunlight and the ambient temperature is below 45–60 °C, then restart. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 302, PV insulation resistance fault: Low PV insulation resistance. Fix: Check the PV cable connection integrity. Wait for a sunny day to test. Contact your installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 303, Bypass relay fault: A fault in the bypass relay. Fix: Wait 5 minutes for the inverter to recover, or restart the system. If the error persists, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 304, Off-grid relay fault: A fault in the off-grid relay. Fix: Wait 5 minutes for the inverter to recover, or restart the system. If the error persists, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 306, Input and output power mismatch: The input and output power do not match. Fix: Contact Sungrow or your solar installer if it repeats. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 308, Slave DSP redundant fault: A redundancy fault on the slave DSP. Fix: Restart the system. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 309, Phase voltage sampling fault: The phase-voltage sampling circuit faulted. Fix: Restart the system. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 312, DC injection sampling fault: The DC-injection sampling circuit faulted. Fix: Restart the system. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 315, PV1 current sampling fault: The PV1 current-sampling channel is anomalous. Fix: Contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 316, PV2 current sampling fault: The PV2 current-sampling channel is anomalous. Fix: Contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 317, PV1 MPPT current sampling fault: The PV1 MPPT current-sampling circuit faulted. Fix: Restart the system. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 318, PV2 MPPT current sampling fault: The PV2 MPPT current-sampling circuit faulted. Fix: Restart the system. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 319, System power supply failure: A failure of the system power supply. Fix: Restart the system. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 320, Leakage current sensor fault: A fault in the leakage-current sensor. Fix: Contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 321, SPI communication failure: Communication faults between the master DSP and the slave DSP. Fix: Restart the system. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 322, Master DSP communication fault: A communication fault on the master DSP. Fix: Restart the system. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 401–408, Permanent faults: A permanent fault was recorded. (Sungrow groups these codes under a single remedy.) Fix: Restart the system. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 409, All temperature sensors fail: All temperature sensors have failed. Fix: Contact Sungrow or your solar installer if it repeats. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 501, FRAM1 reading warning: An external-memory read/write warning (FRAM1). Fix: The inverter can still connect to the grid. Restart the system. If the fault persists, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 505, Radiator temp sensor open-circuit: Radiator temperature sensor open-circuit warning. Fix: Contact Sungrow or your solar installer if it repeats. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 506, Radiator temp sensor short-circuit: Radiator temperature sensor short-circuit warning. Fix: Contact Sungrow or your solar installer if it repeats. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 509, Clock reset fault: The clock has been reset. Fix: Manually reset the clock, or synchronise with network time, to clear the fault. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 511, Ambient temp sensor open-circuit: Ambient temperature sensor open-circuit warning. Fix: Contact Sungrow or your solar installer if it repeats. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 514, Energy Meter communication warning: Abnormal Energy Meter communication (the inverter can still connect to the grid). Safe checks now: Record the code and note whether monitoring data is missing. Do not access the meter or switchboard; contact the installer if it persists. Installer remedy: A licensed installer should verify the meter model, power supply, polarity and RS485 wiring against the current SH5T–SH25T commissioning instructions. Preserve settings as found and correct the communication path before considering component replacement. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 502 · 503 · 504 · 507 · 508 · 510 · 513 · 516–518 · 994 · 996, System Alarm: The current SH5T–SH25T manual groups these 12 codes under one generic "System Alarm" entry rather than describing each individually (they previously carried specific but unverified descriptions — sensor open/short-circuit, DO power settings, PV over-voltage, fan speed — that this manual does not support). The inverter continues operating while the alarm is active. Safe checks now: Record the code and time. The inverter continues operating during this alarm; check only for safely visible wiring or environmental issues near the unit. Do not open the inverter or handle wiring; contact the installer if the alarm persists. Installer remedy: A licensed installer should check the related wiring, terminals and any foreign material or environmental abnormality near the current SH5T–SH25T installation, per the manual's System Alarm guidance. The inverter continues operating during this alarm; escalate to Sungrow if it persists after correction. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 532–535, String reverse connection: A PV string is connected with reversed polarity. Fix: Check the string polarity; adjust only when solar radiation is low and the string current is below 0.5 A. Contact Sungrow if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 548–551, Abnormal PV string current: A PV string current is abnormal. Fix: Check for shaded PV modules; remove shade and clean them. Check for abnormal module aging. Contact Sungrow if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 622, Leakage current sampling fault: The leakage-current sampling circuit faulted. Fix: Wait a moment for the inverter to recover. If the fault occurs repeatedly, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 600, Temporary BDC charging over-current: A temporary over-current during battery (BDC) charging. Fix: Wait for the system to recover, or restart. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 601, Temporary BDC discharging over-current: A temporary over-current during battery (BDC) discharging. Fix: Wait for the system to recover, or restart. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 602, Clamping capacitor under-voltage: The clamping-capacitor voltage is too low. Fix: Check the battery cable connection. Wait for recovery or restart. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 603, Temporary clamping capacitor over-voltage: A temporary clamping-capacitor over-voltage. Fix: Wait for the system to recover, or restart. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 608, BDC circuit self-check fault: The battery (BDC) circuit self-check failed. Fix: Wait for the system to recover, or restart. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 612, BDC over-temperature: The battery (BDC) stage is over temperature. Fix: Check and clean the heat sink, verify the location is not in sunlight and the ambient temperature is below 45 °C, then restart. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 616, BDC hardware over-current: The battery (BDC) hardware over-current limit was exceeded. Fix: The system resumes once the battery charge/discharge current falls below the upper limit, or restart the system. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 620, BDC current sampling fault: The battery (BDC) current-sampling circuit faulted. Fix: Wait for the system to recover, or restart. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 623, Slave DSP communication fault: A slave DSP communication fault. Fix: Wait for the system to recover, or restart. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 624, BDC soft-start fault: The battery (BDC) soft-start failed. Fix: Wait for the system to recover, or restart. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 703, Battery average under-voltage: The average battery voltage is too low. Safe checks now: Record the code and battery indicators and allow the system to recover. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 707, Battery over-temperature: The battery is over temperature. Fix: The inverter stays grid-connected but charge/discharge has stopped. Check the battery's ambient temperature. Wait for recovery or restart. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 708, Battery under-temperature: The battery is under temperature. Fix: The inverter stays grid-connected but charge/discharge has stopped. Check the battery's ambient temperature. Wait for recovery or restart. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 711, Instantaneous battery over-voltage: An instantaneous battery over-voltage. Safe checks now: Record the code and battery indicators and allow the system to recover. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 712, Battery average over-voltage: The average battery voltage is too high. Safe checks now: Record the code and battery indicators and allow the system to recover. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 714, Abnormal battery–inverter communication: Abnormal communication between the battery and the hybrid inverter. Safe checks now: Record the inverter and battery indicators. Do not reconnect communication cables or operate battery switches; contact the installer if the alarm remains. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 715, Battery hardware over-voltage: The battery hardware over-voltage limit was exceeded. Safe checks now: Record the code and battery indicators and allow the system to recover. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 732, Battery over-voltage protection: Battery over-voltage protection has triggered. Safe checks now: Record the code and battery indicators and allow the system to recover. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 733, Battery over-temperature protection: Battery over-temperature protection has triggered. Safe checks now: Record the code and safely visible ambient conditions and allow the battery to cool. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 734, Battery under-temperature protection: Battery under-temperature protection has triggered. Safe checks now: Record the code and safely visible ambient conditions and allow the battery to warm within its installed environment. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 735, Battery charge/discharge over-current protection: Battery charging/discharging over-current protection has triggered. Safe checks now: Record the code and battery indicators and allow the system to recover. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 736, Battery Abnormal: The current SH5T–SH25T manual groups this code with 703, 711, 712, 715, 732–735, 739, 832, 833, 835 and 837 under one generic "Battery Abnormal" entry rather than describing each individually. Safe checks now: Record the code and battery indicators and allow the system to recover. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 739, Battery under-voltage protection: Battery under-voltage protection has triggered. Safe checks now: Record the code and battery indicators and allow the system to recover. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 800 · 802 · 804 · 807, BDC internal permanent fault: An internal permanent fault in the battery (BDC) stage. (Sungrow groups these codes under a single remedy.) Fix: Restart the system. Contact Sungrow if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 832, Battery FET fault: A battery FET fault or electrical switch failure. Safe checks now: Record the code and battery indicators. Do not force a restart or operate battery cabling or switches; contact the installer. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 833, Battery Abnormal: The current SH5T–SH25T manual groups this code with 703, 711, 712, 715, 732–736, 739, 835 and 837 under one generic "Battery Abnormal" entry rather than describing each individually. Safe checks now: Record the code and battery indicators and allow the system to recover. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 834, Battery over-current permanent fault: A battery charging/discharging over-current permanent fault. Fix: The inverter stays grid-connected but charge/discharge has stopped. Check the battery port voltage and cable connection. Force-shutdown and restart the system. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 835, Battery Abnormal: The current SH5T–SH25T manual groups this code with 703, 711, 712, 715, 732–736, 739, 833 and 837 under one generic "Battery Abnormal" entry rather than describing each individually. Safe checks now: Record the code and battery indicators and allow the system to recover. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 836, ID competing failure: An ID-competing failure. Fix: Restart the system. Contact Sungrow if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 837, Battery Abnormal: The current SH5T–SH25T manual groups this code with 703, 711, 712, 715, 732–736, 739, 833 and 835 under one generic "Battery Abnormal" entry rather than describing each individually. Safe checks now: Record the code and battery indicators and allow the system to recover. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 839, Mismatched software version: The software versions do not match. Fix: Contact Sungrow for a solution. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 844, Software self-verifying failure: The software self-verification failed. Fix: Restart the system. Contact Sungrow if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 864, Battery cell over-voltage: A battery cell over-voltage fault. Fix: The inverter can still connect to the grid but charge/discharge has stopped. Wait a moment for recovery or restart the system. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 866, Battery pre-charge voltage fault: A battery pre-charge voltage fault. Fix: The inverter stays grid-connected but charge/discharge has stopped. Check the battery port voltage and cable connection. Force-shutdown and restart the system. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 867, Battery under-voltage fault: A battery under-voltage fault. Fix: The inverter stays grid-connected but charge/discharge has stopped. Check the battery port voltage and cable connection. Force-shutdown and restart the system. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 868, Battery cell voltage imbalance: A battery cell voltage imbalance fault. Fix: The inverter stays grid-connected but charge/discharge has stopped. Check the battery port voltage and cable connection. Force-shutdown and restart the system. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 870, Battery cable connection fault: A battery cable connection fault. Fix: The inverter stays grid-connected but charge/discharge has stopped. Check the battery port voltage and cable connection. Force-shutdown and restart the system. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 900 · 901, BDC temperature sensor warning: A battery (BDC) temperature-sensor warning. (Sungrow groups these codes under a single remedy.) Fix: Check and clean the heat sink, verify the location is not in sunlight and the ambient temperature is below 45 °C, then restart. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 906, Transformer direction recognition error: The transformer direction was recognised incorrectly. Fix: The inverter can still connect to the grid but charge/discharge has stopped. Wait a moment for recovery or restart the system. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 909, Low SOH (State of Health) warning: The battery's State of Health is low. Fix: The inverter stays grid-connected and charge/discharge is normal. The battery is beyond the scope of the warranty. It is recommended to contact the distributor for replacement. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 910, FRAM2 warning: A FRAM2 memory warning. Fix: Restart the inverter. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 932, Battery over-voltage warning: A battery over-voltage warning. Safe checks now: Record the code and battery indicators and allow the system to recover. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 933, Battery over-temperature warning: A battery over-temperature warning. Safe checks now: Record the code and safely visible ambient conditions and allow the battery to cool. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 934, Battery under-temperature warning: A battery under-temperature warning. Safe checks now: Record the code and safely visible ambient conditions and allow the battery to warm within its installed environment. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 935, Battery charge/discharge over-current warning: A battery charging/discharging over-current warning. Safe checks now: Record the code and battery indicators and allow the system to recover. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 937, Battery tray voltage imbalance warning: A battery tray voltage imbalance warning. Safe checks now: Record the code and battery indicators. Do not inspect or reconnect battery cables; contact the installer if the warning remains. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 939, Battery under-voltage warning: A battery under-voltage warning. Safe checks now: Record the code and battery indicators and allow the system to recover. Do not operate battery cabling or switches; contact the installer if it persists. Installer remedy: A licensed installer should use the current SH5T–SH25T manual and the exact battery documentation to verify the indicated battery state, temperature, voltage, cable or communication condition. Use only the documented recovery path and escalate persistent protection events without bypassing the BMS. Applicability: confirmed; SH5T–SH25T; documented exact models SH5T, SH6T, SH8T, SH10T, SH12T, SH15T, SH20T, SH25T; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Sungrow SH5T/6T/8T/10T/12T/15T/20T/25T three-phase hybrid inverter user manual, version 17 (2025-04) (Version 17 (2025-04)). Alarm remedies apply only where the code cites this T-family manual. They do not apply to the separate parenthesised SH aliases, earlier RT/RS families or unreviewed generic system-fault rows; installed firmware still requires confirmation. - 964, Battery internal warning: An internal battery warning. Fix: Consult the battery manufacturer for a solution. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 001 (SH), Grid over-voltage: SH hybrid series: grid over-voltage. Fix: The inverter reconnects after the grid recovers. If frequent, measure the grid voltage and contact the utility company or Sungrow. Verify the protection parameters and AC cable cross-section. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 002 (SH), Grid under-voltage: SH hybrid series: grid under-voltage. Fix: Generally reconnects after the grid recovers. If frequent, measure the grid voltage and contact the utility company. Verify the protection parameters and AC cable connections. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 003 (SH), Grid over-frequency: SH hybrid series: grid over-frequency. Fix: Generally reconnects after recovery. If frequent, measure the grid frequency and contact the utility company. Verify the protection parameters. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 004 (SH), Grid under-frequency: SH hybrid series: grid under-frequency. Fix: Generally reconnects after recovery. If frequent, measure the grid frequency and contact the utility company. Verify the protection parameters. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 005 (SH), No grid: SH hybrid series: no grid detected. Fix: Check the grid power supply reliability, AC cable connections, live/neutral wire placement, and AC switch status. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 006 (SH), Over-high leakage current: SH hybrid series: leakage current too high. Fix: Can be caused by poor sunlight or a damp environment. The inverter reconnects after conditions improve. If the environment is normal, check that the AC and DC cables are well insulated. If the alarm persists, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 007 (SH), Grid abnormal: SH hybrid series: grid abnormal. Fix: Generally reconnects after recovery. If frequent, measure the grid frequency and contact the utility company. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 008 (SH), Grid voltage unbalance: SH hybrid series: unbalanced grid voltage. Fix: Generally reconnects after recovery. If frequent, measure the grid voltage; if unbalanced, contact the utility company. Modify the settings via the app if within the permissible range. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 009 (SH), PV reverse connection fault: SH hybrid series: PV reverse connection fault. Fix: Check the string polarity; adjust only when solar radiation is low and string current is below 0.5 A. Verify that strings on the same MPPT have the same module count. Contact Sungrow if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 010 (SH), PV reverse connection alarm: SH hybrid series: PV reverse connection alarm. Fix: Check the string polarity; adjust only when solar radiation is low and string current is below 0.5 A. Verify that strings on the same MPPT have the same module count. Contact Sungrow if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 011 (SH), PV abnormal alarm: SH hybrid series: PV abnormal alarm. Fix: Check for shaded PV modules; remove shade and clean them. Check for abnormal module aging. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 012 (SH), High ambient temperature: SH hybrid series: high ambient temperature. Fix: Avoid direct sunlight; clean the air ducts; check for a fan alarm via the app and replace the fan if needed. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 013 (SH), Low ambient temperature: SH hybrid series: low ambient temperature. Fix: Stop and disconnect the inverter. Restart it when the ambient temperature is within the permissible range. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 014 (SH), Low ISO resistance: SH hybrid series: low insulation (ISO) resistance. Fix: Wait for recovery. Verify the protection value via the app complies with regulations. Check the PV cable insulation. Clear any water/vegetation on site. Contact Sungrow if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 015 (SH), Grounding cable fault: SH hybrid series: grounding cable fault. Fix: Check the AC cable connections. Verify the grounding-cable wire-core insulation. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 016 (SH), Arc fault: SH hybrid series: DC arc fault. Fix: Disconnect the DC inputs and check the cables for damage, terminal connections, fuses, and burnt modules. Reconnect and clear via the app. Contact your installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 017 (SH), Off-grid load over-power: SH hybrid series: off-grid load over-power. Fix: Reduce the power of loads connected at the off-grid port, or remove some loads. If the alarm persists, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 018 (SH), Reverse Smart Energy Meter connection: SH hybrid series: Smart Energy Meter connected in reverse. Fix: Check the meter polarity against the cable-port markings and correct it if needed. Verify the meter is connected at the grid connection point. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 019 (SH), Smart Energy Meter communication error: SH hybrid series: Smart Energy Meter communication error. Fix: Check the meter communication cable and terminals for abnormality, and reconnect the communication cable. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 020 (SH), Grid confrontation: SH hybrid series: grid confrontation. Fix: Check whether the AC output port is connected to the actual grid; if so, disconnect it. If the alarm persists, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 021 (SH), Parallel communication alarm: SH hybrid series: parallel communication alarm. Fix: Check the communication cable and terminal connections for abnormality, and reinstall the communication cable. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 022 (SH), BMS communication error: SH hybrid series: battery management system (BMS) communication error. Fix: Check the communication cable and terminal connections for abnormality, and reinstall the communication cable. Contact Sungrow or your solar installer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 023 (SH), Battery polarity reversed: SH hybrid series: battery polarity reversed. Fix: Check the battery polarity is correct and correct it if necessary. If the alarm persists, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 024 (SH), Battery alarm: SH hybrid series: battery alarm. Fix: The battery generally recovers automatically. If persistent, address ambient-temperature issues or contact the battery manufacturer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 025 (SH), Battery abnormal: SH hybrid series: battery abnormal. Fix: If the voltage is abnormal, check the battery's real-time voltage and contact the manufacturer or Sungrow. For temperature issues, improve heat dissipation. Contact the manufacturer if it persists. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 063 (SH), System alarm: SH hybrid series: system alarm. Fix: The inverter can operate normally. Check whether the related cable connections and terminals are abnormal, and whether the ambient environment is abnormal; take corrective measures if so. If the alarm persists, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 064 (SH), System fault: SH hybrid series: system fault. Fix: Wait for the inverter to recover. Disconnect the AC and DC switches or circuit breakers, then reconnect them after 15 minutes. If the alarm persists, contact Sungrow or your solar installer. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. --- ## Growatt: fault codes Source: https://wattbench.ai/growatt-error-codes This guide separates current MOD 3–10KTL3-XH evidence from legacy 1000–5000 TL / 2500–5000 MTL vocabulary. Reviewed remedies are attached only to the numbered MOD XH entries recovered in Growatt's official current manual, including warning 205, which the manual identifies as PV boost driver abnormal. Legacy codes and legacy named aliases remain remedy-blank because their service bulletin is available only through a secondary mirror. Australian and global Growatt pages both list the MOD family, but the installed Australian variant and firmware range are not established by the manual metadata. Code 303 is the one exception to the single-source claim above: it isn't in the MOD XH manual's own Error-code table, so it's cited instead to the separate, AU-hosted MOD XA manual, where it matches exactly. The other eight numbered entries remain sourced to MOD XH. The Warning NNN and Error NNN entries below come from that same AU-hosted XA manual's two troubleshooting tables (§13.2.1 and §13.2.2) — the tables reuse the same numbers for different faults (Warning 303 is an EPS overload; Error 303 is the neutral-to-earth condition), so each entry carries its family word the way the inverter's own display does. A few XA rows name components from Growatt's wider system range (SPH storage, the SP-CT sensor, the off-grid box, a generator); those entries keep the manual's own naming and flag it, since the table text is shared across families. Safety note: owners should record the code and contact their installer. Isolation, measurements, wiring, parameter changes and internal repairs are licensed-worker tasks. - 100, Reference-voltage fault: Legacy TL/MTL family: the inverter detected an internal reference-voltage fault. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 101, CPU communication fault: Legacy TL/MTL family: communication between the inverter's internal processors failed. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 102, Processor data mismatch: Legacy TL/MTL family: the data reported by the two internal processors is inconsistent. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 116, EEPROM fault: Legacy TL/MTL family: the inverter reported an internal memory fault. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 117, Relay-circuit fault: Legacy TL/MTL family: the inverter detected an abnormality in its internal relay circuit. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 118, Initialisation / model fault: Legacy TL/MTL family: the inverter did not initialise with a valid model configuration. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 119, GFCI device fault: Legacy TL/MTL family: the inverter detected an internal ground-fault monitoring device fault. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 120, Current-sensor fault: Legacy TL/MTL family: the inverter detected an internal current-sensor fault. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 121, CPU communication loss: Legacy TL/MTL family: the main processor did not receive data from the secondary processor. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 122, Bus-voltage fault: Legacy TL/MTL family: the inverter's internal DC bus voltage is outside its expected range. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 201 · Residual I High, Residual current high: MOD XH: the inverter detected excessive leakage current. Legacy TL/MTL units can display the named message Residual I High for the same class of protection event. Safe checks now: Record the code, time and weather conditions. Do not reset the inverter, touch PV wiring or operate isolators; arrange a licensed inspection if the event persists or returns. Installer remedy: Apply the MOD 3–10KTL3-XH manual's insulation or residual-current checks under safe isolation. Rectify the cause before returning the system to service; this remedy does not cover the legacy named label. Applicability: family-level; MOD 3–10KTL3-XH; exact model list not documented; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Growatt MOD 3–10KTL3-XH user manual, May 2024. The numbered MOD XH entries only, including warning 205 as PV boost driver abnormal. Exact models, legacy TL/MTL aliases, Australian variant and firmware range are not confirmed. - 202 · PV Voltage High, PV input voltage too high: The PV input voltage exceeded the inverter's permitted limit. Safe checks now: Leave the inverter and array wiring alone, record the code and contact the installer promptly. Do not reset the unit or operate DC equipment to test whether it clears. Installer remedy: Measure each string under the approved procedure and compare the temperature-corrected open-circuit voltage with the exact MOD XH input limit. Correct the design before reconnection. Applicability: family-level; MOD 3–10KTL3-XH; exact model list not documented; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Growatt MOD 3–10KTL3-XH user manual, May 2024. The numbered MOD XH entries only, including warning 205 as PV boost driver abnormal. Exact models, legacy TL/MTL aliases, Australian variant and firmware range are not confirmed. - 203 · PV Isolation Low, PV insulation resistance low: The inverter measured low insulation resistance between the PV circuit and earth. Safe checks now: Record the code, time and weather conditions. Do not reset the inverter, touch PV wiring or operate isolators; arrange a licensed inspection if the event persists or returns. Installer remedy: Apply the MOD 3–10KTL3-XH manual's insulation or residual-current checks under safe isolation. Rectify the cause before returning the system to service; this remedy does not cover the legacy named label. Applicability: family-level; MOD 3–10KTL3-XH; exact model list not documented; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Growatt MOD 3–10KTL3-XH user manual, May 2024. The numbered MOD XH entries only, including warning 205 as PV boost driver abnormal. Exact models, legacy TL/MTL aliases, Australian variant and firmware range are not confirmed. - 205 · PV boost driver abnormal, PV boost driver abnormal: MOD XH warning 205: the inverter detected an abnormal condition in the PV boost driver. Safe checks now: Record warning 205 and the exact inverter model. Do not open the inverter or operate PV equipment to investigate it; contact the installer if the warning remains. Installer remedy: For a MOD 3–10KTL3-XH displaying warning 205, follow the exact model procedure for one controlled restart. If the PV boost-driver warning remains, stop and escalate to Growatt support rather than inferring a string-side repair. Applicability: family-level; MOD 3–10KTL3-XH; exact model list not documented; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Growatt MOD 3–10KTL3-XH user manual, May 2024. The numbered MOD XH entries only, including warning 205 as PV boost driver abnormal. Exact models, legacy TL/MTL aliases, Australian variant and firmware range are not confirmed. - 300 · AC V Outrange, Grid voltage out of range: MOD XH: the grid voltage is outside the configured operating range. Legacy TL/MTL units use the named AC V Outrange message. Safe checks now: Record the event and whether the premises supply appears normal. Do not change the grid profile or operate solar isolators; contact the installer if it repeats. Installer remedy: Check the grid condition, AC connection and approved settings using the MOD 3–10KTL3-XH manual. Preserve the grid profile and escalate a confirmed supply issue through the network process. Applicability: family-level; MOD 3–10KTL3-XH; exact model list not documented; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Growatt MOD 3–10KTL3-XH user manual, May 2024. The numbered MOD XH entries only, including warning 205 as PV boost driver abnormal. Exact models, legacy TL/MTL aliases, Australian variant and firmware range are not confirmed. - 302 · No AC Connection, No AC connection: The inverter cannot detect an acceptable grid connection. Safe checks now: Record the event and whether the premises supply appears normal. Do not change the grid profile or operate solar isolators; contact the installer if it repeats. Installer remedy: Check the grid condition, AC connection and approved settings using the MOD 3–10KTL3-XH manual. Preserve the grid profile and escalate a confirmed supply issue through the network process. Applicability: family-level; MOD 3–10KTL3-XH; exact model list not documented; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Growatt MOD 3–10KTL3-XH user manual, May 2024. The numbered MOD XH entries only, including warning 205 as PV boost driver abnormal. Exact models, legacy TL/MTL aliases, Australian variant and firmware range are not confirmed. - 303, Neutral-to-earth abnormal: MOD XA: the inverter detected an abnormal neutral-to-earth condition (NE abnormal) — an Earth Fault Alarm the manual says shows on the display with the red LED lit. Error 303 is not in the currently-cited MOD XH manual's Error-code table, which runs 300 straight to 304; it's confirmed instead in the separate, AU-hosted MOD XA manual. Safe checks now: Record the code, time and weather conditions. Do not reset the inverter, touch PV wiring or operate isolators; arrange a licensed inspection if the event persists or returns. Installer remedy: Check that the PE (protective earth) line has a good connection, per the MOD XA manual's own two-step procedure for this exact code. If the fault remains after that check, escalate to Growatt support under safe isolation rather than repeatedly resetting the inverter. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 304 · AC F Outrange, Grid frequency out of range: MOD XH: the grid frequency is outside the configured operating range. Legacy TL/MTL units use the named AC F Outrange message. Safe checks now: Record the event and whether the premises supply appears normal. Do not change the grid profile or operate solar isolators; contact the installer if it repeats. Installer remedy: Check the grid condition, AC connection and approved settings using the MOD 3–10KTL3-XH manual. Preserve the grid profile and escalate a confirmed supply issue through the network process. Applicability: family-level; MOD 3–10KTL3-XH; exact model list not documented; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Growatt MOD 3–10KTL3-XH user manual, May 2024. The numbered MOD XH entries only, including warning 205 as PV boost driver abnormal. Exact models, legacy TL/MTL aliases, Australian variant and firmware range are not confirmed. - 408 · Over Temperature, Over temperature: The inverter temperature exceeded its operating limit. Safe checks now: From a safe position, keep the inverter area clear and note direct sun, abnormal heat or visibly blocked airflow. Do not open the enclosure; contact the installer if it remains. Installer remedy: Check the MOD 3–10KTL3-XH installation clearances, ventilation and ambient conditions. Escalate if the inverter continues to report over-temperature in normal conditions. Applicability: family-level; MOD 3–10KTL3-XH; exact model list not documented; Three-phase string inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Growatt MOD 3–10KTL3-XH user manual, May 2024. The numbered MOD XH entries only, including warning 205 as PV boost driver abnormal. Exact models, legacy TL/MTL aliases, Australian variant and firmware range are not confirmed. - Output High DCI, Output DC injection high: Legacy TL/MTL family: the measured DC component of the AC output exceeded the permitted value. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Auto Test Failed, Auto-test failed: Legacy TL/MTL family: the automatic grid-protection test used for the Italy configuration did not pass. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 200 · String fault, String fault: MOD XA: the inverter reports a fault on a PV string. Safe checks now: Record the exact Warning or Error number and the time. Do not operate isolators, open the inverter or touch wiring to investigate; contact the installer if the message remains. Installer remedy: The XA manual's step for this code is a shutdown-first check of the named component or wiring under the site's safe-isolation procedure. Rectify what the check finds, and escalate to Growatt if the message returns after the documented check. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 201 · String PID terminal detection error, String PID quick-connect terminal detection error: MOD XA: the PID function's quick-connect terminal detection reports an error on a string. Safe checks now: Record the exact Warning or Error number and the time. Do not operate isolators, open the inverter or touch wiring to investigate; contact the installer if the message remains. Installer remedy: The XA manual's step for this code is a shutdown-first check of the named component or wiring under the site's safe-isolation procedure. Rectify what the check finds, and escalate to Growatt if the message returns after the documented check. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 202 · DC SPD abnormal, DC surge protection abnormal: MOD XA: the DC surge protection device (SPD) function is abnormal. Safe checks now: Record the exact Warning or Error number and the time. Do not operate isolators, open the inverter or touch wiring to investigate; contact the installer if the message remains. Installer remedy: The XA manual's step for this code is a shutdown-first check of the named component or wiring under the site's safe-isolation procedure. Rectify what the check finds, and escalate to Growatt if the message returns after the documented check. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 203 · PV circuit short, PV circuit short: MOD XA: the PV1 or PV2 wiring is short-circuited. Safe checks now: Record the exact Warning or Error number and the time. Do not operate isolators, open the inverter or touch wiring to investigate; contact the installer if the message remains. Installer remedy: The XA manual's step for this code is a shutdown-first check of the named component or wiring under the site's safe-isolation procedure. Rectify what the check finds, and escalate to Growatt if the message returns after the documented check. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 204 · Dry contact abnormal, Dry-contact function abnormal: MOD XA: the dry-contact function is abnormal. Safe checks now: Record the exact Warning or Error number and the time. Do not operate isolators, open the inverter or touch wiring to investigate; contact the installer if the message remains. Installer remedy: The XA manual's step for this code is a shutdown-first check of the named component or wiring under the site's safe-isolation procedure. Rectify what the check finds, and escalate to Growatt if the message returns after the documented check. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 206 · AC SPD abnormal, AC surge protection abnormal: MOD XA: the AC surge protection device (SPD) function is abnormal. Safe checks now: Record the exact Warning or Error number and the time. Do not operate isolators, open the inverter or touch wiring to investigate; contact the installer if the message remains. Installer remedy: The XA manual's step for this code is a shutdown-first check of the named component or wiring under the site's safe-isolation procedure. Rectify what the check finds, and escalate to Growatt if the message returns after the documented check. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 207 · USB over-current, USB (U-disk) over-current protection: MOD XA: the USB port's over-current protection has operated against the connected U-disk. Safe checks now: Record the code and note whether monitoring data is missing. This family concerns metering and communication accessories; do not access the meter, CT or wiring, and contact the installer if it persists. Installer remedy: Check the CT, meter, optimiser or communication connection the XA manual names for this exact code, after shutdown where the manual says so. Restore the communication path before considering hardware replacement. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 208 · DC fuse open, DC fuse open: MOD XA: a DC fuse is open. Safe checks now: Record the exact Warning or Error number and the time. Do not operate isolators, open the inverter or touch wiring to investigate; contact the installer if the message remains. Installer remedy: The XA manual's step for this code is a shutdown-first check of the named component or wiring under the site's safe-isolation procedure. Rectify what the check finds, and escalate to Growatt if the message returns after the documented check. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 209 · DC input voltage too high, DC input voltage exceeds maximum: MOD XA: the DC input voltage is exceeding the maximum tolerable value. Safe checks now: Leave the inverter and array wiring alone, record the warning and contact the installer promptly. Do not operate DC equipment to test whether it clears. Installer remedy: The XA manual directs immediately disconnecting the DC switch and checking the voltage — licensed work under safe isolation. Verify the string design against the input limit before reconnection, and contact Growatt if the warning outlives a restored normal voltage. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 210 · PV reversed, PV reversed: MOD XA: a PV input is connected with reversed polarity. Safe checks now: Record the exact Warning or Error number and the time. Do not operate isolators, open the inverter or touch wiring to investigate; contact the installer if the message remains. Installer remedy: The XA manual's step for this code is a shutdown-first check of the named component or wiring under the site's safe-isolation procedure. Rectify what the check finds, and escalate to Growatt if the message returns after the documented check. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 300 · No utility, No utility: MOD XA: the inverter cannot detect the utility grid. Safe checks now: Record the message and whether the premises supply appears normal. The inverter should recover when the grid returns to range; do not change the grid profile, and contact the installer if it repeats. Installer remedy: Check the measured grid condition and AC connection against the XA manual and the approved settings. Preserve the grid profile and escalate a confirmed supply issue through the network process. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 301 · Grid voltage outrange, Grid voltage out of range: MOD XA: the AC voltage is outside the standard voltage range in the specification. Safe checks now: Record the message and whether the premises supply appears normal. The inverter should recover when the grid returns to range; do not change the grid profile, and contact the installer if it repeats. Installer remedy: Check the measured grid condition and AC connection against the XA manual and the approved settings. Preserve the grid profile and escalate a confirmed supply issue through the network process. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 302 · Grid frequency outrange, Grid frequency out of range: MOD XA: the grid frequency is outside the specification's range. Safe checks now: Record the message and whether the premises supply appears normal. The inverter should recover when the grid returns to range; do not change the grid profile, and contact the installer if it repeats. Installer remedy: Check the measured grid condition and AC connection against the XA manual and the approved settings. Preserve the grid profile and escalate a confirmed supply issue through the network process. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 303 · EPS overload, EPS mode overload: MOD XA: the load on the EPS (backup) output is too high. A different fault from Error 303, which is the neutral-to-earth condition. Safe checks now: Note which appliances were running and reduce ordinary household or backup load if safe to do so. Do not operate inverter isolators; contact the installer if the overload trips again. Installer remedy: Check the connected load against the rating the XA manual names for this output, reduce or redistribute it, and use only the documented recovery. Investigate a recurring overload before restoring all loads. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 304 · CT open or wrong, CT open or wrong: MOD XA: the AC current sensor (CT) is open-circuit or incorrectly connected. Safe checks now: Record the code and note whether monitoring data is missing. This family concerns metering and communication accessories; do not access the meter, CT or wiring, and contact the installer if it persists. Installer remedy: Check the CT, meter, optimiser or communication connection the XA manual names for this exact code, after shutdown where the manual says so. Restore the communication path before considering hardware replacement. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 305 · CT reversed or ground fail, CT line reversed or ground fail: MOD XA: the SP-CT's L and N lines are reversed, or its earth connection has failed. Safe checks now: Record the code and note whether monitoring data is missing. This family concerns metering and communication accessories; do not access the meter, CT or wiring, and contact the installer if it persists. Installer remedy: Check the CT, meter, optimiser or communication connection the XA manual names for this exact code, after shutdown where the manual says so. Restore the communication path before considering hardware replacement. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 306 · SP-CT data not received, SP-CT communication fault: MOD XA: a communication fault — the manual's wording is that the M3 did not receive SP-CT data. Safe checks now: Record the code and note whether monitoring data is missing. This family concerns metering and communication accessories; do not access the meter, CT or wiring, and contact the installer if it persists. Installer remedy: Check the CT, meter, optimiser or communication connection the XA manual names for this exact code, after shutdown where the manual says so. Restore the communication path before considering hardware replacement. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 307 · Communication fault, Communication fault: MOD XA: a communication fault. Safe checks now: Record the code and note whether monitoring data is missing. This family concerns metering and communication accessories; do not access the meter, CT or wiring, and contact the installer if it persists. Installer remedy: Check the CT, meter, optimiser or communication connection the XA manual names for this exact code, after shutdown where the manual says so. Restore the communication path before considering hardware replacement. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 400 · Fan abnormal, Fan function abnormal: MOD XA: the cooling fan function is abnormal. Safe checks now: From a safe position, note any blocked airflow or unusual heat around the equipment. Do not open the enclosure; contact the installer if the message remains in normal conditions. Installer remedy: Check the fan wiring and cooling path the XA manual names, after powering down where it says so, and replace the fan through the documented procedure if required. Escalate if cooling is restored and the message returns. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 401 · Meter abnormal, Meter abnormal: MOD XA: the energy meter is abnormal or not communicating. Safe checks now: Record the code and note whether monitoring data is missing. This family concerns metering and communication accessories; do not access the meter, CT or wiring, and contact the installer if it persists. Installer remedy: Check the CT, meter, optimiser or communication connection the XA manual names for this exact code, after shutdown where the manual says so. Restore the communication path before considering hardware replacement. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 402 · Optimiser communication abnormal, Optimiser communication abnormal: MOD XA: communication between the optimiser and the inverter is abnormal. Safe checks now: Record the code and note whether monitoring data is missing. This family concerns metering and communication accessories; do not access the meter, CT or wiring, and contact the installer if it persists. Installer remedy: Check the CT, meter, optimiser or communication connection the XA manual names for this exact code, after shutdown where the manual says so. Restore the communication path before considering hardware replacement. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 403 · String communication abnormal, String communication abnormal: MOD XA: string communication is abnormal. Safe checks now: Record the exact Warning or Error number and the time. Do not operate isolators, open the inverter or touch wiring to investigate; contact the installer if the message remains. Installer remedy: The XA manual's step for this code is a shutdown-first check of the named component or wiring under the site's safe-isolation procedure. Rectify what the check finds, and escalate to Growatt if the message returns after the documented check. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 404 · EEPROM abnormal, EEPROM abnormal: MOD XA: the inverter's EEPROM (internal memory) is abnormal. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 405 · Firmware version mismatch, DSP and COM firmware version mismatch: MOD XA: the DSP and COM firmware versions do not match. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 406 · Boost module error, Boost module error: MOD XA: the boost module reports an error. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 500 · Lithium battery communication failed, Lithium battery communication failed: MOD XA: communication with the lithium battery failed. The manual's own wording names the SPH here — shared text from Growatt's storage family — so confirm this row against your exact installed hardware. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 501 · Battery terminal open, Battery terminal open: MOD XA: a battery terminal is open (lithium battery only, per the manual). Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 502 · Battery voltage high, Battery voltage high: MOD XA: the battery voltage is above range. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 503 · Battery voltage low, Battery voltage low: MOD XA: the battery voltage is below range. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 504 · Battery terminals reversed, Battery terminals reversed: MOD XA: the battery's positive and negative terminals are reversed. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 505 · Lead-acid temperature sensor open, Lead-acid battery temperature sensor open: MOD XA: the lead-acid battery's temperature sensor is open-circuit or not installed. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 506 · Battery temperature outrange, Battery temperature out of range: MOD XA: the battery's environment temperature is outside the specification range. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 507 · BMS failure, BMS failure — charge and discharge blocked: MOD XA: a BMS failure, with neither charge nor discharge allowed. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 508 · Lithium battery overload, Lithium battery overload: MOD XA: the output load exceeds the lithium battery's rated power. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 509 · BMS message failure, BMS battery message failure: MOD XA: the BMS battery message failed. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 510 · Battery SPD abnormal, Battery surge protection abnormal: MOD XA: the battery-side surge protection device (BAT SPD) function is abnormal. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 600 · DCI bias abnormal, DCI bias abnormal: MOD XA: the DC-injection (DCI) bias is abnormal. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 601 · DC voltage high, DC voltage high fault: MOD XA: a DC voltage high fault. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 602 · Off-grid output voltage low, Off-grid output voltage too low: MOD XA: the off-grid (backup) output voltage is too low. Safe checks now: Record the code and whether backup power is currently needed. Do not operate the off-grid box, generator or inverter switches; contact the installer if the condition remains. Installer remedy: Follow the XA manual's step for this exact code on the off-grid output, off-grid box or generator path, exactly as its row states it. Escalate to Growatt if the message returns after that documented step. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 603 · Off-grid output voltage high, Off-grid output voltage too high: MOD XA: the off-grid (backup) output voltage is too high. Safe checks now: Record the code and whether backup power is currently needed. Do not operate the off-grid box, generator or inverter switches; contact the installer if the condition remains. Installer remedy: Follow the XA manual's step for this exact code on the off-grid output, off-grid box or generator path, exactly as its row states it. Escalate to Growatt if the message returns after that documented step. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 604 · Off-grid output overcurrent, Off-grid output overcurrent: MOD XA: the off-grid output current is over-current. Safe checks now: Note which appliances were running and reduce ordinary household or backup load if safe to do so. Do not operate inverter isolators; contact the installer if the overload trips again. Installer remedy: Check the connected load against the rating the XA manual names for this output, reduce or redistribute it, and use only the documented recovery. Investigate a recurring overload before restoring all loads. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 605 · Off-grid bus voltage low, Off-grid bus voltage too low: MOD XA: the off-grid bus voltage is too low. Safe checks now: Note which appliances were running and reduce ordinary household or backup load if safe to do so. Do not operate inverter isolators; contact the installer if the overload trips again. Installer remedy: Check the connected load against the rating the XA manual names for this output, reduce or redistribute it, and use only the documented recovery. Investigate a recurring overload before restoring all loads. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 606 · Off-grid output overloaded, Off-grid output overloaded: MOD XA: the off-grid output is overloaded. Safe checks now: Note which appliances were running and reduce ordinary household or backup load if safe to do so. Do not operate inverter isolators; contact the installer if the overload trips again. Installer remedy: Check the connected load against the rating the XA manual names for this output, reduce or redistribute it, and use only the documented recovery. Investigate a recurring overload before restoring all loads. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 607 · Off-grid box communication abnormal, Off-grid box communication abnormal: MOD XA: an abnormal-communication alarm with the off-grid box accessory. Safe checks now: Record the code and whether backup power is currently needed. Do not operate the off-grid box, generator or inverter switches; contact the installer if the condition remains. Installer remedy: Follow the XA manual's step for this exact code on the off-grid output, off-grid box or generator path, exactly as its row states it. Escalate to Growatt if the message returns after that documented step. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 608 · Off-grid box abnormal, Off-grid box abnormal alarm: MOD XA: the off-grid box accessory raises an abnormal alarm. Safe checks now: Record the code and whether backup power is currently needed. Do not operate the off-grid box, generator or inverter switches; contact the installer if the condition remains. Installer remedy: Follow the XA manual's step for this exact code on the off-grid output, off-grid box or generator path, exactly as its row states it. Escalate to Growatt if the message returns after that documented step. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 700 · Off-grid box fan faulty, Off-grid box fan faulty: MOD XA: the off-grid box's fan is faulty. Safe checks now: Record the code and whether backup power is currently needed. Do not operate the off-grid box, generator or inverter switches; contact the installer if the condition remains. Installer remedy: Follow the XA manual's step for this exact code on the off-grid output, off-grid box or generator path, exactly as its row states it. Escalate to Growatt if the message returns after that documented step. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Warning 701 · Generator started abnormally, Generator started abnormally: MOD XA: the generator started abnormally. Safe checks now: Record the code and whether backup power is currently needed. Do not operate the off-grid box, generator or inverter switches; contact the installer if the condition remains. Installer remedy: Follow the XA manual's step for this exact code on the off-grid output, off-grid box or generator path, exactly as its row states it. Escalate to Growatt if the message returns after that documented step. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 200 · AFCI fault, AFCI fault: MOD XA: the arc-fault (AFCI) protection reports a fault. Safe checks now: Record the exact Warning or Error number and the time. Do not operate isolators, open the inverter or touch wiring to investigate; contact the installer if the message remains. Installer remedy: The XA manual's step for this code is a shutdown-first check of the named component or wiring under the site's safe-isolation procedure. Rectify what the check finds, and escalate to Growatt if the message returns after the documented check. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 301 · AC terminals reversed, AC terminals reversed: MOD XA: the AC terminals are reverse-connected. Safe checks now: Record the exact Warning or Error number and the time. Do not operate isolators, open the inverter or touch wiring to investigate; contact the installer if the message remains. Installer remedy: The XA manual's step for this code is a shutdown-first check of the named component or wiring under the site's safe-isolation procedure. Rectify what the check finds, and escalate to Growatt if the message returns after the documented check. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 305 · Over load, Overload fault: MOD XA: the output load is over range. Safe checks now: Note which appliances were running and reduce ordinary household or backup load if safe to do so. Do not operate inverter isolators; contact the installer if the overload trips again. Installer remedy: Check the connected load against the rating the XA manual names for this output, reduce or redistribute it, and use only the documented recovery. Investigate a recurring overload before restoring all loads. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 306 · CT L-N reversed, CT L and N reversed: MOD XA: the SP-CT's L and N connection is reversed. Safe checks now: Record the code and note whether monitoring data is missing. This family concerns metering and communication accessories; do not access the meter, CT or wiring, and contact the installer if it persists. Installer remedy: Check the CT, meter, optimiser or communication connection the XA manual names for this exact code, after shutdown where the manual says so. Restore the communication path before considering hardware replacement. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 307 · SP-CT data not received, SP-CT communication fault: MOD XA: a communication fault — the manual's wording is that the M3 did not receive SP-CT data. Safe checks now: Record the code and note whether monitoring data is missing. This family concerns metering and communication accessories; do not access the meter, CT or wiring, and contact the installer if it persists. Installer remedy: Check the CT, meter, optimiser or communication connection the XA manual names for this exact code, after shutdown where the manual says so. Restore the communication path before considering hardware replacement. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 308 · Pairing timeout, Pairing time too long: MOD XA: a communication fault — pairing took too long. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 400 · DCI bias abnormal, DCI bias abnormal: MOD XA: the DC-injection (DCI) bias is abnormal. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 401 · DC voltage high, DC voltage high fault: MOD XA: a DC voltage high fault. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 402 · Output DC current too high, Output DC current too high: MOD XA: the DC component of the output current is too high. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 403 · Output current unbalance, Output current unbalance: MOD XA: the output current is unbalanced. Safe checks now: Record the exact Warning or Error number and the time. Do not operate isolators, open the inverter or touch wiring to investigate; contact the installer if the message remains. Installer remedy: The XA manual's step for this code is a shutdown-first check of the named component or wiring under the site's safe-isolation procedure. Rectify what the check finds, and escalate to Growatt if the message returns after the documented check. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 404 · Bus sample fault, Bus sample fault: MOD XA: an internal bus-sampling fault. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 405 · Relay fault, Relay fault: MOD XA: an internal relay fault. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 406 · Init model fault, Initialisation model fault: MOD XA: the inverter's model initialisation failed. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 407 · Auto-test failure, Auto-test failure: MOD XA: the automatic test did not pass. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 409 · Bus voltage abnormal, Bus voltage abnormal: MOD XA: the internal bus voltage is abnormal. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 410 · Battery-voltage sampling inconsistent, Battery-voltage sampling inconsistent: MOD XA: the communication board and control panel sample the battery voltage inconsistently. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 411 · Communication fault, Communication fault: MOD XA: an internal communication fault. Safe checks now: Record the exact Warning or Error number and the time. Do not operate isolators, open the inverter or touch wiring to investigate; contact the installer if the message remains. Installer remedy: The XA manual's step for this code is a shutdown-first check of the named component or wiring under the site's safe-isolation procedure. Rectify what the check finds, and escalate to Growatt if the message returns after the documented check. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 412 · Temperature sensor abnormal, Temperature sensor connection abnormal: MOD XA: the temperature sensor's connection is abnormal. Safe checks now: Record the exact Warning or Error number and the time. Do not operate isolators, open the inverter or touch wiring to investigate; contact the installer if the message remains. Installer remedy: The XA manual's step for this code is a shutdown-first check of the named component or wiring under the site's safe-isolation procedure. Rectify what the check finds, and escalate to Growatt if the message returns after the documented check. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 413 · IGBT drive fault, IGBT drive fault: MOD XA: an IGBT drive fault in the power stage. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 414 · EEPROM fault, EEPROM fault: MOD XA: an EEPROM (internal memory) fault. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 415 · Internal power test fail, Internal power test fail (PV power low): MOD XA: the internal power test failed — the manual notes PV power low. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 416 · Software overcurrent, Overcurrent protected by software: MOD XA: the software over-current protection operated. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 417 · Grid voltage sampling inconsistent, Grid-voltage sampling inconsistent: MOD XA: the grid-voltage sampling is inconsistent between measurement channels. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 418 · Firmware version mismatch, DSP and COM firmware version mismatch: MOD XA: the DSP and COM firmware versions do not match. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 419 · Leakage sampling inconsistent, Leakage-current sampling inconsistent: MOD XA: the leakage-current sampling is inconsistent between measurement channels. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 420 · GFCI module damage, GFCI module damage: MOD XA: the ground-fault (GFCI) leakage-current module is damaged. Safe checks now: Record the exact Warning or Error number and the time. Do not operate isolators, open the inverter or touch wiring to investigate; contact the installer if the message remains. Installer remedy: The XA manual's step for this code is a shutdown-first check of the named component or wiring under the site's safe-isolation procedure. Rectify what the check finds, and escalate to Growatt if the message returns after the documented check. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 421 · CPLD abnormal, CPLD abnormal: MOD XA: the CPLD (internal logic device) is abnormal. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 422 · Sampling inconsistent, Sampling inconsistent: MOD XA: internal sampling is inconsistent. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 425 · AFCI self-test fault, AFCI self-test fault: MOD XA: the arc-fault (AFCI) self-test failed. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 500 · BMS communication fault, BMS communication fault: MOD XA: BMS communication failed. The manual's own steps name the SP's RS485 cable — shared text from Growatt's storage family — so confirm this row against your exact installed hardware. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 501 · BMS failure, BMS failure — charge and discharge blocked: MOD XA: a BMS failure, with neither charge nor discharge allowed. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 502 · Battery voltage low, Battery voltage low: MOD XA: the battery voltage is low. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 503 · Battery voltage high, Battery voltage high: MOD XA: the battery voltage is too high. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 505 · Battery terminals reversed, Battery terminals reversed: MOD XA: the battery terminals are reverse-connected. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 506 · Battery terminal open, Battery terminal open: MOD XA: a battery terminal is open (lithium battery only, per the manual). Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 507 · Lithium battery overload, Lithium battery overload: MOD XA: the output load exceeds the lithium battery's rated power. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 508 · BUS2 voltage abnormal, BUS2 voltage abnormal: MOD XA: the internal BUS2 voltage is abnormal. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 509 · Battery charge overcurrent, Battery charge overcurrent: MOD XA: battery charge over-current protection operated. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 510 · Battery discharge overcurrent, Battery discharge overcurrent: MOD XA: battery discharge over-current protection operated. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 511 · Battery soft-start fault, Battery soft-start fault: MOD XA: the battery soft-start failed. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 600 · EPS output short, EPS output short fault: MOD XA: a short circuit on the EPS (backup) output. Safe checks now: Record the code and whether backup power is currently needed. Do not operate the off-grid box, generator or inverter switches; contact the installer if the condition remains. Installer remedy: Follow the XA manual's step for this exact code on the off-grid output, off-grid box or generator path, exactly as its row states it. Escalate to Growatt if the message returns after that documented step. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 601 · Bus low, Bus low: MOD XA: the internal bus voltage is low — the manual's check is whether the battery works properly. Safe checks now: Record the code and the battery state shown in the app. Do not alter battery settings, BMS wiring or terminals; contact the installer if the message does not clear. Installer remedy: Check the battery voltage, terminals, temperature conditions or BMS communication the XA manual names for this exact code, against the battery's own documentation. Correct the mismatch before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 602 · AC port voltage abnormal, AC port voltage abnormal: MOD XA: the AC port voltage is abnormal. Safe checks now: Record the code and whether backup power is currently needed. Do not operate the off-grid box, generator or inverter switches; contact the installer if the condition remains. Installer remedy: Follow the XA manual's step for this exact code on the off-grid output, off-grid box or generator path, exactly as its row states it. Escalate to Growatt if the message returns after that documented step. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 603 · Soft-start timeout, Soft start ran out of time: MOD XA: the soft start ran out of time. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 604 · Off-grid output voltage low, Off-grid output voltage too low: MOD XA: the off-grid (backup) output voltage is too low. Safe checks now: Record the code and whether backup power is currently needed. Do not operate the off-grid box, generator or inverter switches; contact the installer if the condition remains. Installer remedy: Follow the XA manual's step for this exact code on the off-grid output, off-grid box or generator path, exactly as its row states it. Escalate to Growatt if the message returns after that documented step. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 605 · Balance circuit fault, Balance circuit fault: MOD XA: the balance circuit reports a fault. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 606 · DC voltage high, DC voltage high fault: MOD XA: a DC voltage high fault. Safe checks now: Record the exact Warning or Error number and the time. Do not repeatedly restart the inverter or change settings; contact the installer if the message does not clear. Installer remedy: The XA manual's step for this code is one controlled restart. If the message persists after that single documented restart, stop and escalate to Growatt support rather than power-cycling repeatedly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 607 · EPS output overload, EPS output overload: MOD XA: the EPS (backup) output is overloaded. Safe checks now: Note which appliances were running and reduce ordinary household or backup load if safe to do so. Do not operate inverter isolators; contact the installer if the overload trips again. Installer remedy: Check the connected load against the rating the XA manual names for this output, reduce or redistribute it, and use only the documented recovery. Investigate a recurring overload before restoring all loads. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 608 · Offline signal error, Offline parallel signal error: MOD XA: the off-grid parallel signal reports an error (the manual's wording is OfflineSignError). Safe checks now: Record the code and whether backup power is currently needed. Do not operate the off-grid box, generator or inverter switches; contact the installer if the condition remains. Installer remedy: Follow the XA manual's step for this exact code on the off-grid output, off-grid box or generator path, exactly as its row states it. Escalate to Growatt if the message returns after that documented step. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 609 · Off-grid box not detected, Off-grid box not detected: MOD XA: the off-grid box accessory is not detected. Safe checks now: Record the code and whether backup power is currently needed. Do not operate the off-grid box, generator or inverter switches; contact the installer if the condition remains. Installer remedy: Follow the XA manual's step for this exact code on the off-grid output, off-grid box or generator path, exactly as its row states it. Escalate to Growatt if the message returns after that documented step. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 700 · Off-grid box communication abnormal, Off-grid box: abnormal communication with the inverter: MOD XA: the off-grid box reports abnormal communication with the inverter. Safe checks now: Record the code and whether backup power is currently needed. Do not operate the off-grid box, generator or inverter switches; contact the installer if the condition remains. Installer remedy: Follow the XA manual's step for this exact code on the off-grid output, off-grid box or generator path, exactly as its row states it. Escalate to Growatt if the message returns after that documented step. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 701 · Off-grid box grid relay failure, Off-grid box grid-side relay failure: MOD XA: the off-grid box's grid-side relay failed. Safe checks now: Record the code and whether backup power is currently needed. Do not operate the off-grid box, generator or inverter switches; contact the installer if the condition remains. Installer remedy: Follow the XA manual's step for this exact code on the off-grid output, off-grid box or generator path, exactly as its row states it. Escalate to Growatt if the message returns after that documented step. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 702 · Off-grid box generator relay fault, Off-grid box generator access relay fault: MOD XA: the off-grid box's generator access relay is faulty. Safe checks now: Record the code and whether backup power is currently needed. Do not operate the off-grid box, generator or inverter switches; contact the installer if the condition remains. Installer remedy: Follow the XA manual's step for this exact code on the off-grid output, off-grid box or generator path, exactly as its row states it. Escalate to Growatt if the message returns after that documented step. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 703 · Off-grid box overloaded, Off-grid box overloaded: MOD XA: the off-grid box is overloaded. Safe checks now: Note which appliances were running and reduce ordinary household or backup load if safe to do so. Do not operate inverter isolators; contact the installer if the overload trips again. Installer remedy: Check the connected load against the rating the XA manual names for this output, reduce or redistribute it, and use only the documented recovery. Investigate a recurring overload before restoring all loads. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 704 · Off-grid box split-phase overload, Off-grid box overloaded (split-phase): MOD XA: the off-grid box is overloaded on the off-grid split-phase output. Safe checks now: Note which appliances were running and reduce ordinary household or backup load if safe to do so. Do not operate inverter isolators; contact the installer if the overload trips again. Installer remedy: Check the connected load against the rating the XA manual names for this output, reduce or redistribute it, and use only the documented recovery. Investigate a recurring overload before restoring all loads. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Error 705 · Off-grid box overheat, Overheat inside the off-grid box: MOD XA: the temperature inside the off-grid box is too high. Safe checks now: Record the code and whether backup power is currently needed. Do not operate the off-grid box, generator or inverter switches; contact the installer if the condition remains. Installer remedy: Follow the XA manual's step for this exact code on the off-grid output, off-grid box or generator path, exactly as its row states it. Escalate to Growatt if the message returns after that documented step. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. --- ## GoodWe: fault codes Source: https://wattbench.ai/goodwe-error-codes A reference compiled by Wattbench from GoodWe documentation and field sources. GoodWe shows faults as a numbered error code and/or a named fault depending on the model. On an LCD unit, short-press the front button and scroll to “Error”/“Fault”; on ET/EH/EHB hybrid units, check Alarms in the SolarGo app or the SEMS portal. Where a fault has both a number and a name, we list them together, and both are searchable. Five ET G2 codes previously carried plain numbers (16, 19, 20, 24/31, 26/32) that did not match this model's own fault-code table; they are now labelled with the exact F-code the ET G2 manual uses (F133, F35, F132, F30, F31) after direct verification against that table. Safety note: earth, insulation and PV over-voltage faults need a licensed worker. An owner should record the alarm and keep clear of isolators, wiring and connectors while the responsible installer follows the exact product procedure. - 1, SPI failure: An internal communication (SPI bus) failure inside the inverter. Safe checks now: Record the exact code, inverter model and time. Do not operate isolators or open the inverter; contact your installer or GoodWe if the code remains. Installer remedy: Follow the controlled shutdown and restart sequence for the exact model. If the fault returns, preserve the code and escalate to GoodWe after-sales rather than repeatedly resetting it. Applicability: confirmed; ETC Series; documented exact models GW50K-ETC; Hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ETC Series User Manual V1.1 (official) (V1.1). The manual names GW50K-ETC and describes the ETC series as a hybrid bidirectional inverter. Exact installed regional variant and firmware applicability remain unconfirmed. - 2, EEPROM R/W failure: A read/write failure on the inverter's memory chip. Safe checks now: Record the exact code, inverter model and time. Do not operate isolators or open the inverter; contact your installer or GoodWe if the code remains. Installer remedy: Follow the controlled shutdown and restart sequence for the exact model. If the fault returns, preserve the code and escalate to GoodWe after-sales rather than repeatedly resetting it. Applicability: confirmed; ETC Series; documented exact models GW50K-ETC; Hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ETC Series User Manual V1.1 (official) (V1.1). The manual names GW50K-ETC and describes the ETC series as a hybrid bidirectional inverter. Exact installed regional variant and firmware applicability remain unconfirmed. - 3 · Fac Failure, Grid frequency fault: The grid frequency is outside the inverter's permissible range. Safe checks now: Note when the alarm occurs and whether the property supply appears normal. It should clear when grid frequency returns to range; contact your installer if it persists or repeats. Installer remedy: Check the displayed and measured grid frequency against the approved operating settings. Preserve the configured country/protection profile and escalate persistent supply abnormalities through the authorised network process. Applicability: confirmed; ET Series / ET Plus Series; documented exact models GW5K-ET, GW6.5K-ET, GW8K-ET, GW10K-ET, GW5KL-ET, GW6KL-ET, GW8KL-ET, GW10KL-ET; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ET Series User Manual V1.1 (official) (V1.1). The manual names eight ET/ET Plus three-phase hybrid inverter models. Confirm the installed suffix, regional variant and current firmware before acting. - 7 · 25, Relay check failure: The inverter's grid relay failed its self-check. Safe checks now: Record the exact code, inverter model and time. Do not operate isolators or open the inverter; contact your installer or GoodWe if the code remains. Installer remedy: Check the AC neutral-to-earth condition under the model-specific procedure, then perform one controlled restart. A recurring relay check failure requires GoodWe service assessment. Applicability: confirmed; ETC Series; documented exact models GW50K-ETC; Hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ETC Series User Manual V1.1 (official) (V1.1). The manual names GW50K-ETC and describes the ETC series as a hybrid bidirectional inverter. Exact installed regional variant and firmware applicability remain unconfirmed. - 12, LCD communication failure: A communication error between the LCD/display and the master DSP. Safe checks now: Record the exact code, inverter model and time. Do not operate isolators or open the inverter; contact your installer or GoodWe if the code remains. Installer remedy: Follow the controlled shutdown and restart sequence for the exact model. If the fault returns, preserve the code and escalate to GoodWe after-sales rather than repeatedly resetting it. Applicability: confirmed; ETC Series; documented exact models GW50K-ETC; Hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ETC Series User Manual V1.1 (official) (V1.1). The manual names GW50K-ETC and describes the ETC series as a hybrid bidirectional inverter. Exact installed regional variant and firmware applicability remain unconfirmed. - 13, DC injection high: The DC component of the AC output current exceeds the inverter's limit. Safe checks now: Record the exact code, inverter model and time. Do not operate isolators or open the inverter; contact your installer or GoodWe if the code remains. Installer remedy: Perform one controlled restart under the exact product procedure. If the DC-injection fault returns, stop resetting and escalate immediately to GoodWe after-sales. Applicability: confirmed; ETC Series; documented exact models GW50K-ETC; Hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ETC Series User Manual V1.1 (official) (V1.1). The manual names GW50K-ETC and describes the ETC series as a hybrid bidirectional inverter. Exact installed regional variant and firmware applicability remain unconfirmed. - 14 · Isolation Fail, Isolation failure: Insulation resistance between the PV array and ground is too low, most common in rain or high humidity. Safe checks now: Record the code, time and weather conditions. Do not reset the inverter, touch PV connectors or operate isolators; arrange a licensed inspection if it persists or returns. Installer remedy: Test the PV insulation resistance to earth using the exact model limits and safe-isolation procedure. Inspect the affected string wiring, connectors, earthing and moisture exposure before returning the system to service. Applicability: confirmed; ET Series / ET Plus Series; documented exact models GW5K-ET, GW6.5K-ET, GW8K-ET, GW10K-ET, GW5KL-ET, GW6KL-ET, GW8KL-ET, GW10KL-ET; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ET Series User Manual V1.1 (official) (V1.1). The manual names eight ET/ET Plus three-phase hybrid inverter models. Confirm the installed suffix, regional variant and current firmware before acting. - 15 · Vac Failure, Grid voltage fault: The grid voltage is outside the acceptable range for the inverter. Safe checks now: Note when the alarm occurs and whether other equipment has lost supply. The inverter should reconnect when grid voltage returns to range; contact your installer if it persists or repeats. Installer remedy: Measure the inverter AC supply, verify wiring and the approved country/protection profile, and retain the settings as found. Escalate a confirmed supply-voltage issue through the authorised network process. Applicability: confirmed; ET Series / ET Plus Series; documented exact models GW5K-ET, GW6.5K-ET, GW8K-ET, GW10K-ET, GW5KL-ET, GW6KL-ET, GW8KL-ET, GW10KL-ET; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ET Series User Manual V1.1 (official) (V1.1). The manual names eight ET/ET Plus three-phase hybrid inverter models. Confirm the installed suffix, regional variant and current firmware before acting. - F133 · External Fan Abnormal, External fan abnormal: The external cooling fan is not operating correctly. The ET G2 manual lists the possible causes as a fan power-supply fault, a mechanical stall, or fan ageing/damage. Safe checks now: From a safe position, check that the inverter's external airflow is not visibly obstructed. Do not touch the fan or open the unit; contact your installer if the alarm remains. Installer remedy: Follow the ET G2 manual's fan-fault procedure: turn off the AC output and DC input switches, wait 5 minutes, then restart. Replace a failed external fan through the authorised service process if the alarm persists. Applicability: confirmed; ET G2 6–15 kW; documented exact models GW6000-ET-20, GW8000-ET-20, GW9900-ET-20, GW10K-ET-20, GW12K-ET-20, GW15K-ET-20; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ET G2 6–15 kW User Manual V2.1 (official) (V2.1). The manual names six ET G2 three-phase hybrid inverter models. Firmware applicability for the displayed fault still requires the installed version and current exact-model documentation. - 17 · PV Over Voltage, PV over-voltage: The PV array voltage exceeds the inverter's maximum input. Safe checks now: Leave the inverter and PV wiring alone, record the code and contact your installer promptly. Do not reset the inverter or operate isolators to test whether it clears. Installer remedy: Measure each string's open-circuit voltage under the approved procedure and compare it with the exact inverter input limit and temperature-corrected design. Correct the string design before reconnection. Applicability: confirmed; ET Series / ET Plus Series; documented exact models GW5K-ET, GW6.5K-ET, GW8K-ET, GW10K-ET, GW5KL-ET, GW6KL-ET, GW8KL-ET, GW10KL-ET; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ET Series User Manual V1.1 (official) (V1.1). The manual names eight ET/ET Plus three-phase hybrid inverter models. Confirm the installed suffix, regional variant and current firmware before acting. - F35, Cabinet over temperature: The inverter cabinet's temperature has exceeded its safe limit. The ET G2 manual lists the possible causes as poor ventilation at the install location, high ambient temperature, or abnormal internal fan operation. Safe checks now: From a safe position, keep the area around the inverter clear and note whether it is in direct sun, poorly ventilated or unusually hot. Do not open the unit; contact your installer if it does not recover after cooling. Installer remedy: Check the installation ventilation and ambient temperature against the ET G2 manual's limits. If both are within range and the alarm persists, escalate to GoodWe rather than opening the enclosure. Applicability: confirmed; ET G2 6–15 kW; documented exact models GW6000-ET-20, GW8000-ET-20, GW9900-ET-20, GW10K-ET-20, GW12K-ET-20, GW15K-ET-20; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ET G2 6–15 kW User Manual V2.1 (official) (V2.1). The manual names six ET G2 three-phase hybrid inverter models. Firmware applicability for the displayed fault still requires the installed version and current exact-model documentation. - F132 · Internal Fan Abnormal, Internal fan abnormal: The internal cooling fan is not operating correctly. The ET G2 manual lists the possible causes as a fan power-supply fault, a mechanical stall, or fan ageing/damage. Safe checks now: Record the exact code, inverter model and time. Do not operate isolators or open the inverter; contact your installer or GoodWe if the code remains. Installer remedy: Follow the ET G2 manual's fan-fault procedure: turn off the AC output and DC input switches, wait 5 minutes, then restart. An internal fan fault that remains requires authorised service; do not leave the enclosure open in operation. Applicability: confirmed; ET G2 6–15 kW; documented exact models GW6000-ET-20, GW8000-ET-20, GW9900-ET-20, GW10K-ET-20, GW12K-ET-20, GW15K-ET-20; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ET G2 6–15 kW User Manual V2.1 (official) (V2.1). The manual names six ET G2 three-phase hybrid inverter models. Firmware applicability for the displayed fault still requires the installed version and current exact-model documentation. - 21, DC bus high: The internal DC bus voltage is too high. Safe checks now: Record the exact code, inverter model and time. Do not operate isolators or open the inverter; contact your installer or GoodWe if the code remains. Installer remedy: Follow the controlled shutdown and restart sequence for the exact model. If the fault returns, preserve the code and escalate to GoodWe after-sales rather than repeatedly resetting it. Applicability: confirmed; ETC Series; documented exact models GW50K-ETC; Hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ETC Series User Manual V1.1 (official) (V1.1). The manual names GW50K-ETC and describes the ETC series as a hybrid bidirectional inverter. Exact installed regional variant and firmware applicability remain unconfirmed. - 22 · Ground I Fail, Ground (residual) current failure: Residual-current (earth-leakage) protection has tripped. Current is leaking to ground. Safe checks now: Record the code, time and weather conditions. Do not reset the inverter or touch system wiring; arrange a licensed inspection if the alarm persists or returns. Installer remedy: Test the PV strings and AC earthing/neutral conditions under the exact product procedure. Locate damaged insulation, moisture ingress or an abnormal earth path before returning the system to service. Applicability: confirmed; ETC Series; documented exact models GW50K-ETC; Hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ETC Series User Manual V1.1 (official) (V1.1). The manual names GW50K-ETC and describes the ETC series as a hybrid bidirectional inverter. Exact installed regional variant and firmware applicability remain unconfirmed. - 23 · Utility Loss, Utility (grid) loss: Loss of connection between the inverter and the utility grid, an outage or a disconnection. Safe checks now: Check whether the property and neighbourhood have grid supply, then record the code and time. Do not operate solar isolators; contact your installer if normal grid supply is present but the alarm remains. Installer remedy: Verify AC supply at the inverter, protective-device state and AC wiring under the approved procedure. If supply and wiring are sound, follow the model troubleshooting path and escalate to GoodWe. Applicability: confirmed; ET Series / ET Plus Series; documented exact models GW5K-ET, GW6.5K-ET, GW8K-ET, GW10K-ET, GW5KL-ET, GW6KL-ET, GW8KL-ET, GW10KL-ET; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ET Series User Manual V1.1 (official) (V1.1). The manual names eight ET/ET Plus three-phase hybrid inverter models. Confirm the installed suffix, regional variant and current firmware before acting. - F30 · AC HCT Check Abnormal, AC current-sensor (HCT) check abnormal: The ET G2 manual describes this as abnormal sampling detected in the AC current sensor. Safe checks now: Record the exact code, inverter model and time. Do not operate isolators or open the inverter; contact your installer or GoodWe if the code remains. Installer remedy: Follow the ET G2 manual's sensor-fault procedure: turn off the AC output and DC input switches, wait 5 minutes, then restart. If the AC current-sensor fault persists, arrange GoodWe service rather than attempting an internal repair. Applicability: confirmed; ET G2 6–15 kW; documented exact models GW6000-ET-20, GW8000-ET-20, GW9900-ET-20, GW10K-ET-20, GW12K-ET-20, GW15K-ET-20; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ET G2 6–15 kW User Manual V2.1 (official) (V2.1). The manual names six ET G2 three-phase hybrid inverter models. Firmware applicability for the displayed fault still requires the installed version and current exact-model documentation. - F31 · GFCI HCT Check Abnormal, Leakage-current sensor (GFCI HCT) check abnormal: The ET G2 manual describes this as abnormal sampling detected in the leakage-current sensor. Safe checks now: Record the exact code, inverter model and time. Do not operate isolators or open the inverter; contact your installer or GoodWe if the code remains. Installer remedy: Follow the ET G2 manual's sensor-fault procedure: turn off the AC output and DC input switches, wait 5 minutes, then restart. A persistent leakage-current sensor fault requires prompt service because the protection it provides cannot be relied upon. Applicability: confirmed; ET G2 6–15 kW; documented exact models GW6000-ET-20, GW8000-ET-20, GW9900-ET-20, GW10K-ET-20, GW12K-ET-20, GW15K-ET-20; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ET G2 6–15 kW User Manual V2.1 (official) (V2.1). The manual names six ET G2 three-phase hybrid inverter models. Firmware applicability for the displayed fault still requires the installed version and current exact-model documentation. - 30, Reference 1.5 V failure: The internal 1.5 V reference voltage is out of range. Safe checks now: Record the exact code, inverter model and time. Do not operate isolators or open the inverter; contact your installer or GoodWe if the code remains. Installer remedy: Follow the controlled shutdown and restart sequence for the exact model. If the fault returns, preserve the code and escalate to GoodWe after-sales rather than repeatedly resetting it. Applicability: confirmed; ETC Series; documented exact models GW50K-ETC; Hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ETC Series User Manual V1.1 (official) (V1.1). The manual names GW50K-ETC and describes the ETC series as a hybrid bidirectional inverter. Exact installed regional variant and firmware applicability remain unconfirmed. - PE Loss, Protective earth (PE) loss: A missing or faulty protective-earth connection, possibly loose wiring, corrosion, or grounding-system damage. Safe checks now: Do not reset the inverter or touch electrical equipment. Record the code and arrange a licensed electrician or your installer to attend. Installer remedy: Verify the protective-earth connection and continuity under the approved safe-isolation procedure. Rectify the earthing fault before the inverter is returned to service. Applicability: confirmed; ET Series / ET Plus Series; documented exact models GW5K-ET, GW6.5K-ET, GW8K-ET, GW10K-ET, GW5KL-ET, GW6KL-ET, GW8KL-ET, GW10KL-ET; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ET Series User Manual V1.1 (official) (V1.1). The manual names eight ET/ET Plus three-phase hybrid inverter models. Confirm the installed suffix, regional variant and current firmware before acting. - Device Failure, Internal device failure: A general internal device failure (shown for faults outside the listed codes). Safe checks now: Record the exact code, inverter model and time. Do not operate isolators or open the inverter; contact your installer or GoodWe if the code remains. Installer remedy: Follow the controlled shutdown and restart sequence for the exact model. If the fault returns, preserve the code and escalate to GoodWe after-sales rather than repeatedly resetting it. Applicability: confirmed; ET G2 6–15 kW; documented exact models GW6000-ET-20, GW8000-ET-20, GW9900-ET-20, GW10K-ET-20, GW12K-ET-20, GW15K-ET-20; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual GoodWe ET G2 6–15 kW User Manual V2.1 (official) (V2.1). The manual names six ET G2 three-phase hybrid inverter models. Firmware applicability for the displayed fault still requires the installed version and current exact-model documentation. --- ## Solis (Ginlong): fault codes Source: https://wattbench.ai/solis-alarm-codes Solis alarm names vary by inverter family and firmware. The reviewed remedies use Solis's official North American complete alarm list plus its global no-display article. That establishes manufacturer provenance, but it does not confirm an Australian variant, a single model family or a firmware range; those fields remain blank. Confirm the exact model and displayed wording before applying an entry. Two entries this cited alarm list doesn't support have been removed (`G-IMP`, `Reverse-GRID`); three range labels have been corrected to the list's actual code counts (`OV-G-V01–05`, not `...04`; `OV-DC01–02`, not `...04`; and the former `DC-INTF / OV-DCA-I` split into `OV-DCA-I / OV-DCB-I` and a separate `DC-INTF`, since the list treats the missing `OV-DCB-I` and `DC-INTF` as distinct conditions, not the same fault). Safety note: owners should record the alarm and safely visible conditions. DC/AC isolation, measurements, connectors, wiring, settings and internal work are licensed-installer tasks performed to the exact model manual. - LCD blank, No display / inverter will not turn on: The LCD or indicators remain blank and the inverter is not starting. Safe checks now: Record that the display and indicators are blank. Do not operate DC equipment or test live circuits; contact the installer to follow the Solis no-display procedure. Installer remedy: Use the Solis no-display procedure to verify DC input, polarity and start voltage for the exact model under safe isolation. Escalate if valid input is present and the inverter remains dark. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Waiting / SoftRun (init loop), Waiting or SoftRun does not clear: The inverter remains in a documented start-up state rather than progressing to generation. This is not the same as the separate INI-FAULT alarm. Safe checks now: Record the exact displayed message and system state. Do not change settings, operate isolators or open equipment; contact the installer if the condition remains. Installer remedy: Follow the matching entry in the Solis alarm list for the exact product and displayed wording. Preserve configuration as found and escalate if the documented checks do not clear the condition. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - OV-G-V01–05, Over grid voltage: The measured grid voltage is above the configured protection limit. Safe checks now: Record the alarm, time and whether the premises supply appears normal. Do not change the grid standard or protection settings; contact the installer if the alarm repeats. Installer remedy: Check the measured grid condition, AC connection and selected standard using the Solis alarm-list procedure. Preserve approved settings and obtain network approval before any protection-point change. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - UN-G-V01/02, Under grid voltage: The measured grid voltage is below the configured protection limit. Safe checks now: Record the alarm, time and whether the premises supply appears normal. Do not change the grid standard or protection settings; contact the installer if the alarm repeats. Installer remedy: Check the measured grid condition, AC connection and selected standard using the Solis alarm-list procedure. Preserve approved settings and obtain network approval before any protection-point change. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - OV-G-F01/02, Over grid frequency: The measured grid frequency is above the configured protection limit. Safe checks now: Record the alarm, time and whether the premises supply appears normal. Do not change the grid standard or protection settings; contact the installer if the alarm repeats. Installer remedy: Check the measured grid condition, AC connection and selected standard using the Solis alarm-list procedure. Preserve approved settings and obtain network approval before any protection-point change. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - UN-G-F01/02, Under grid frequency: The measured grid frequency is below the configured protection limit. Safe checks now: Record the alarm, time and whether the premises supply appears normal. Do not change the grid standard or protection settings; contact the installer if the alarm repeats. Installer remedy: Check the measured grid condition, AC connection and selected standard using the Solis alarm-list procedure. Preserve approved settings and obtain network approval before any protection-point change. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Reverse-DC, DC polarity reversed: The inverter detects reverse polarity at a DC input. Safe checks now: Record the exact alarm and weather conditions, keep clear of the array and do not reset the inverter or operate DC equipment. Arrange a licensed inspection promptly. Installer remedy: Follow the Solis alarm-list checks for polarity, PV voltage, insulation, leakage or arcing under the exact model's safe-isolation procedure. Rectify the cause before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - NO-GRID, No grid detected: The inverter cannot detect an acceptable grid supply. Safe checks now: Record the alarm, time and whether the premises supply appears normal. Do not change the grid standard or protection settings; contact the installer if the alarm repeats. Installer remedy: Check the measured grid condition, AC connection and selected standard using the Solis alarm-list procedure. Preserve approved settings and obtain network approval before any protection-point change. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - OV-DC01–02, Over DC voltage: The DC input voltage on a string (DC1 via OV-DC01, DC2 via OV-DC02) is above the inverter's permitted limit. Safe checks now: Record the exact alarm and weather conditions, keep clear of the array and do not reset the inverter or operate DC equipment. Arrange a licensed inspection promptly. Installer remedy: Follow the Solis alarm-list checks for polarity, PV voltage, insulation, leakage or arcing under the exact model's safe-isolation procedure. Rectify the cause before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - OV-BUS, Over DC bus voltage: The inverter's internal DC bus voltage is too high. Safe checks now: Record the exact alarm, model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer if the alarm does not clear. Installer remedy: Use the current Solis alarm-list procedure for the exact message, including one controlled restart only where documented. Escalate a persistent internal sensing, bus, relay or current fault to Solis. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - UN-BUS01/02, Under DC bus voltage: The inverter's internal DC bus voltage is too low. Safe checks now: Record the exact alarm, model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer if the alarm does not clear. Installer remedy: Use the current Solis alarm-list procedure for the exact message, including one controlled restart only where documented. Escalate a persistent internal sensing, bus, relay or current fault to Solis. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - GRID-INTF01/02, Grid interference: The inverter detected interference or instability on the grid connection. Safe checks now: Record the alarm, time and whether the premises supply appears normal. Do not change the grid standard or protection settings; contact the installer if the alarm repeats. Installer remedy: Check the measured grid condition, AC connection and selected standard using the Solis alarm-list procedure. Preserve approved settings and obtain network approval before any protection-point change. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - OV-G-I, Over grid current: The inverter measured AC output current above its allowed limit. Safe checks now: Record the exact alarm, model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer if the alarm does not clear. Installer remedy: Use the current Solis alarm-list procedure for the exact message, including one controlled restart only where documented. Escalate a persistent internal sensing, bus, relay or current fault to Solis. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - IGBT-OV-I, Over IGBT current: The inverter detected excessive current in its power-conversion stage. Safe checks now: Record the exact alarm, model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer if the alarm does not clear. Installer remedy: Use the current Solis alarm-list procedure for the exact message, including one controlled restart only where documented. Escalate a persistent internal sensing, bus, relay or current fault to Solis. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - OV-DCA-I / OV-DCB-I, DC input average over-current: The inverter detected excessive average current on a DC string/MPPT (DC1 via OV-DCA-I, DC2 via OV-DCB-I). Safe checks now: Record the exact alarm, model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer if the alarm does not clear. Installer remedy: Use the current Solis alarm-list procedure for the exact message, including one controlled restart only where documented. Escalate a persistent internal sensing, bus, relay or current fault to Solis. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - DC-INTF, Abnormal DC input current: The inverter detected an abnormal DC input current condition, distinct from a per-string average overcurrent. Safe checks now: Record the exact alarm, model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer if the alarm does not clear. Installer remedy: Use the current Solis alarm-list procedure for the exact message, including one controlled restart only where documented. Escalate a persistent internal sensing, bus, relay or current fault to Solis. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - IGFOL-F, Grid-current tracking failed: The inverter could not correctly track the grid current. Safe checks now: Record the exact alarm, model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer if the alarm does not clear. Installer remedy: Use the current Solis alarm-list procedure for the exact message, including one controlled restart only where documented. Escalate a persistent internal sensing, bus, relay or current fault to Solis. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - IG-AD, Grid-current sampling failed: The inverter detected a fault in its grid-current sampling circuit. Safe checks now: Record the exact alarm, model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer if the alarm does not clear. Installer remedy: Use the current Solis alarm-list procedure for the exact message, including one controlled restart only where documented. Escalate a persistent internal sensing, bus, relay or current fault to Solis. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - OV-TEM, Over temperature: The inverter temperature exceeded its permitted operating range. Safe checks now: From a safe position, keep the area around the inverter clear and note direct sun, unusual heat or visibly blocked airflow. Do not open the unit; contact the installer if it remains. Installer remedy: Check ambient conditions, installation clearances and cooling against the exact Solis model instructions. If conditions are normal and the alarm persists, follow the manufacturer escalation path. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - INI-FAULT, Initialisation system fault: The inverter detected a system fault during initialisation. Safe checks now: Record the exact alarm, model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer if the alarm does not clear. Installer remedy: Use the current Solis alarm-list procedure for the exact message, including one controlled restart only where documented. Escalate a persistent internal sensing, bus, relay or current fault to Solis. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - DSP-B-FAULT, Main–slave DSP communication failure: Communication between the inverter's internal control processors failed. Safe checks now: Record the exact alarm, model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer if the alarm does not clear. Installer remedy: Use the current Solis alarm-list procedure for the exact message, including one controlled restart only where documented. Escalate a persistent internal sensing, bus, relay or current fault to Solis. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 12power-FAULT, 12 V power-supply fault: The inverter detected a fault in its internal 12 V supply. Safe checks now: Record the exact alarm, model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer if the alarm does not clear. Installer remedy: Use the current Solis alarm-list procedure for the exact message, including one controlled restart only where documented. Escalate a persistent internal sensing, bus, relay or current fault to Solis. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - PV ISO-PRO01/02, PV insulation protection: The inverter measured low insulation resistance between the PV circuit and earth. Safe checks now: Record the exact alarm and weather conditions, keep clear of the array and do not reset the inverter or operate DC equipment. Arrange a licensed inspection promptly. Installer remedy: Follow the Solis alarm-list checks for polarity, PV voltage, insulation, leakage or arcing under the exact model's safe-isolation procedure. Rectify the cause before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - ILeak-PRO01–04, Leakage-current protection: The measured residual current exceeded the protection limit. Safe checks now: Record the exact alarm and weather conditions, keep clear of the array and do not reset the inverter or operate DC equipment. Arrange a licensed inspection promptly. Installer remedy: Follow the Solis alarm-list checks for polarity, PV voltage, insulation, leakage or arcing under the exact model's safe-isolation procedure. Rectify the cause before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - RelayChk-FAIL, Relay check failed: The inverter's internal relay self-check did not pass. Safe checks now: Record the exact alarm, model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer if the alarm does not clear. Installer remedy: Use the current Solis alarm-list procedure for the exact message, including one controlled restart only where documented. Escalate a persistent internal sensing, bus, relay or current fault to Solis. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - DCinj-FAULT, High DC injection current: The measured DC component of the AC output exceeded its protection limit. Safe checks now: Record the exact alarm, model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer if the alarm does not clear. Installer remedy: Use the current Solis alarm-list procedure for the exact message, including one controlled restart only where documented. Escalate a persistent internal sensing, bus, relay or current fault to Solis. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Screen off, Screen off with DC present: The display is off even though the PV circuit may still be energised; the inverter may have an internal fault. Safe checks now: Record the exact alarm, model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer if the alarm does not clear. Installer remedy: Use the current Solis alarm-list procedure for the exact message, including one controlled restart only where documented. Escalate a persistent internal sensing, bus, relay or current fault to Solis. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - AFCI self-test, AFCI self-detection fault: The arc-fault detection module did not pass its self-check. Safe checks now: Record the exact alarm and weather conditions, keep clear of the array and do not reset the inverter or operate DC equipment. Arrange a licensed inspection promptly. Installer remedy: Follow the Solis alarm-list checks for polarity, PV voltage, insulation, leakage or arcing under the exact model's safe-isolation procedure. Rectify the cause before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Arcing, Arc detected in DC circuit: The inverter's arc-fault protection detected a possible DC arc. Safe checks now: Record the exact alarm and weather conditions, keep clear of the array and do not reset the inverter or operate DC equipment. Arrange a licensed inspection promptly. Installer remedy: Follow the Solis alarm-list checks for polarity, PV voltage, insulation, leakage or arcing under the exact model's safe-isolation procedure. Rectify the cause before returning the system to service. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. --- ## SolaX Power (X1 / X3 string and hybrid inverters): fault codes Source: https://wattbench.ai/solax-inverter-error-codes This guide keeps current X1-Hybrid G4 and X3-Hybrid G4 faults separate from legacy X-Hybrid C1/DM9000 vocabulary. Reviewed remedies cite only the current official SolaX manuals. Entries containing C1 or DM9000 remain remedy-blank because their manufacturer-authored manual is available only through a secondary mirror; the current G4 remedies must not be transferred to them. Australian certification exists for some G4 variants, but the reviewed manuals do not establish the installed Australian variant or firmware range. An earlier version of this library listed six faults that neither current manual contains (PLL Lost, a separate 5-minute AC-voltage alarm, PV Config, Sample, SPI/SCI and Inv OCP) and merged four distinct relay faults (Grid, EPS, Battery/Charge and Earth) into one 'Relay Fault' entry; the fabricated entries have been removed, the relay fault split into its four real IE codes, and Battery Voltage Fault (IE07) and the EPS overvoltage protection fault (IE10, DCV OVP Fault) — both genuinely in the manuals and previously missing — added. Safety note: owners should record the fault and safely visible conditions. AC/DC isolation, measurements, battery wiring, protection settings and internal work are licensed-worker tasks. - Grid Lost Fault, Grid connection lost: The inverter cannot detect an acceptable grid supply and has disconnected. Safe checks now: Record the displayed fault, time and whether the premises supply appears normal. Do not change the grid profile or operate solar isolators; contact the installer if it repeats. Installer remedy: Check the grid connection, measured voltage or frequency and approved profile using the exact X1/X3-Hybrid G4 manual. Preserve approved settings and escalate a confirmed supply issue through the network process. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - Grid Volt Fault, Grid voltage out of range: The measured grid voltage is outside the inverter's configured protection range. Safe checks now: Record the displayed fault, time and whether the premises supply appears normal. Do not change the grid profile or operate solar isolators; contact the installer if it repeats. Installer remedy: Check the grid connection, measured voltage or frequency and approved profile using the exact X1/X3-Hybrid G4 manual. Preserve approved settings and escalate a confirmed supply issue through the network process. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - Grid Freq Fault, Grid frequency out of range: The measured grid frequency is outside the inverter's configured protection range. Safe checks now: Record the displayed fault, time and whether the premises supply appears normal. Do not change the grid profile or operate solar isolators; contact the installer if it repeats. Installer remedy: Check the grid connection, measured voltage or frequency and approved profile using the exact X1/X3-Hybrid G4 manual. Preserve approved settings and escalate a confirmed supply issue through the network process. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - AC10M Volt Fault, Sustained grid voltage out of range (10-minute average): The grid voltage averaged over a 10-minute window has exceeded the allowable limit, a longer-term over/under-voltage protection separate from the instantaneous trip. Safe checks now: Record the displayed fault, time and whether the premises supply appears normal. Do not change the grid profile or operate solar isolators; contact the installer if it repeats. Installer remedy: Check the grid connection, measured voltage or frequency and approved profile using the exact X1/X3-Hybrid G4 manual. Preserve approved settings and escalate a confirmed supply issue through the network process. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - Isolation Fault, DC insulation resistance too low: The inverter measured low insulation resistance between the DC circuit and earth. Safe checks now: Record the exact fault and weather conditions. Do not reset the inverter, touch PV connectors or operate DC equipment; arrange a licensed inspection if it persists or returns. Installer remedy: Follow the exact X1/X3-Hybrid G4 procedure for PV voltage, configuration, insulation or residual current. Rectify the DC-side cause before the system is returned to service. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - RCD Fault, Residual-current fault: The inverter's residual-current monitoring detected leakage current above its protection threshold. Safe checks now: Record the exact fault and weather conditions. Do not reset the inverter, touch PV connectors or operate DC equipment; arrange a licensed inspection if it persists or returns. Installer remedy: Follow the exact X1/X3-Hybrid G4 procedure for PV voltage, configuration, insulation or residual current. Rectify the DC-side cause before the system is returned to service. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - PV Volt Fault, PV input voltage out of range: The DC voltage coming from the solar array is outside the inverter's allowable input window. This can be caused by string-design issues (for example too many panels in a string, which pushes voltage high in cold conditions) or an abnormal string condition. Safe checks now: Record the exact fault and weather conditions. Do not reset the inverter, touch PV connectors or operate DC equipment; arrange a licensed inspection if it persists or returns. Installer remedy: Follow the exact X1/X3-Hybrid G4 procedure for PV voltage, configuration, insulation or residual current. Rectify the DC-side cause before the system is returned to service. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - Bat Volt Fault, Battery voltage fault: The inverter measured the connected battery's voltage outside its normal operating range (SolaX manual: IE07). Safe checks now: Record the exact fault, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact the installer if the condition remains. Installer remedy: Follow the exact X1/X3-Hybrid G4 troubleshooting entry and use one controlled recovery only where documented. Escalate a recurring internal, sensing, communication or relay fault to SolaX. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - DCV OVP Fault, EPS (backup) output overvoltage protection: While running on battery backup (EPS/off-grid mode), the inverter detected its EPS output voltage above the protected limit and tripped (SolaX manual: IE10). Safe checks now: Record the exact fault, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact the installer if the condition remains. Installer remedy: Follow the exact X1/X3-Hybrid G4 troubleshooting entry and use one controlled recovery only where documented. Escalate a recurring internal, sensing, communication or relay fault to SolaX. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - Bus Volt Fault, Internal DC bus voltage out of range: The inverter's internal DC bus voltage is outside its permitted range. Safe checks now: Record the exact fault, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact the installer if the condition remains. Installer remedy: Follow the exact X1/X3-Hybrid G4 troubleshooting entry and use one controlled recovery only where documented. Escalate a recurring internal, sensing, communication or relay fault to SolaX. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - Over Temperature Fault, Inverter over temperature (Temp Over Fault): The inverter has exceeded its safe internal operating temperature and has derated or shut down to protect itself. Common in hot weather, poor ventilation, or full-sun wall mounting. Safe checks now: From a safe position, keep the inverter area clear and note direct sun, abnormal heat or visibly blocked airflow. Do not open the enclosure; contact the installer if it remains. Installer remedy: Check ventilation, clearances and fan operation against the exact X1/X3-Hybrid G4 maintenance instructions. Rectify the cooling condition or arrange service if normal conditions do not clear the fault. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - Fan Fault / Fan Speed Fault, Cooling fan fault or abnormal fan speed: A cooling fan (Fan1/Fan2) is not running or is running outside its normal speed range. Often caused by dust, debris or insects blocking the fan, or a worn fan. Safe checks now: From a safe position, keep the inverter area clear and note direct sun, abnormal heat or visibly blocked airflow. Do not open the enclosure; contact the installer if it remains. Installer remedy: Check ventilation, clearances and fan operation against the exact X1/X3-Hybrid G4 maintenance instructions. Rectify the cooling condition or arrange service if normal conditions do not clear the fault. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - Overload Fault, EPS / backup output overloaded: While running on battery backup (EPS mode during a grid outage), the connected load drew more power than the inverter can supply, so it shut the backup output down to protect itself. Safe checks now: Note which ordinary backup appliances were operating and reduce demand if safe to do so. Do not operate inverter isolators; contact the installer if the backup output trips again. Installer remedy: Check the EPS load, surge demand and wiring against the exact X1/X3-Hybrid G4 rating. Use only the documented recovery procedure and investigate a recurring overcurrent before restoring all loads. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - EPS OCP Fault, Overcurrent in EPS (backup) mode: An overcurrent was detected on the backup (EPS) output: for example from a large inrush/surge or a non-linear load when running off battery during an outage. Safe checks now: Note which ordinary backup appliances were operating and reduce demand if safe to do so. Do not operate inverter isolators; contact the installer if the backup output trips again. Installer remedy: Check the EPS load, surge demand and wiring against the exact X1/X3-Hybrid G4 rating. Use only the documented recovery procedure and investigate a recurring overcurrent before restoring all loads. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - Grid Relay Fault, Grid relay fault: The inverter's internal grid-connection relay self-check failed (SolaX manual: IE28). Safe checks now: Record the exact fault, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact the installer if the condition remains. Installer remedy: Follow the exact X1/X3-Hybrid G4 troubleshooting entry and use one controlled recovery only where documented. Escalate a recurring internal, sensing, communication or relay fault to SolaX. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - EPS Relay Fault, EPS (backup) relay fault: The inverter's internal EPS (off-grid/backup) relay self-check failed (SolaX manual: IE29). Safe checks now: Record the exact fault, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact the installer if the condition remains. Installer remedy: Follow the exact X1/X3-Hybrid G4 troubleshooting entry and use one controlled recovery only where documented. Escalate a recurring internal, sensing, communication or relay fault to SolaX. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - Battery/Charge Relay Fault, Battery charge relay fault: The inverter's internal battery charge relay self-check failed (SolaX manual: IE31). Safe checks now: Record the exact fault, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact the installer if the condition remains. Installer remedy: Follow the exact X1/X3-Hybrid G4 troubleshooting entry and use one controlled recovery only where documented. Escalate a recurring internal, sensing, communication or relay fault to SolaX. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - Earth Relay Fault, Earth relay fault: The inverter's internal earth (EPS/off-grid) relay self-check failed (SolaX manual: IE32). Safe checks now: Record the exact fault, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact the installer if the condition remains. Installer remedy: Follow the exact X1/X3-Hybrid G4 troubleshooting entry and use one controlled recovery only where documented. Escalate a recurring internal, sensing, communication or relay fault to SolaX. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - TZ Protect Fault, Hardware overcurrent protection tripped: The inverter's fast hardware overcurrent protection operated. Safe checks now: Record the exact fault, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact the installer if the condition remains. Installer remedy: Follow the exact X1/X3-Hybrid G4 troubleshooting entry and use one controlled recovery only where documented. Escalate a recurring internal, sensing, communication or relay fault to SolaX. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - SW OCP Fault, Software-detected overcurrent: The control system detected overcurrent and stopped conversion. Safe checks now: Record the exact fault, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact the installer if the condition remains. Installer remedy: Follow the exact X1/X3-Hybrid G4 troubleshooting entry and use one controlled recovery only where documented. Escalate a recurring internal, sensing, communication or relay fault to SolaX. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - DCI / DCI OCP / RC Fault, DC injection (DCI) fault: The inverter detected excessive DC current being injected into the AC grid (or a fault in the DCI sensing). Limiting DC injection is a grid-compliance safety requirement. Safe checks now: Record the exact fault, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact the installer if the condition remains. Installer remedy: Follow the exact X1/X3-Hybrid G4 troubleshooting entry and use one controlled recovery only where documented. Escalate a recurring internal, sensing, communication or relay fault to SolaX. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - CT / Meter Fault, CT clamp or smart meter not detected: The inverter cannot communicate properly with the current transformer (CT) clamp or smart meter used to measure import/export (SolaX: 'the CT or the meter is not connected well'). This affects export limiting and energy monitoring rather than basic generation. Safe checks now: Record the exact fault, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact the installer if the condition remains. Installer remedy: Follow the exact X1/X3-Hybrid G4 troubleshooting entry and use one controlled recovery only where documented. Escalate a recurring internal, sensing, communication or relay fault to SolaX. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. - CAN1 Fault / C1 CAN Fault, Battery / charger CAN communication fault: The hybrid inverter lost CAN communication with the battery or legacy charger module. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Inv EEPROM / Mgr EEPROM / C1 EEPROM Fault, Internal memory (EEPROM) fault: An internal memory chip (inverter, manager or charger EEPROM) has reported a read/write error. Can occasionally be transient but often indicates a hardware fault. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - C1 Temp High / C1 Temp Low, Battery charger over / under temperature: The internal battery charger module is too hot (blocked airflow, high charge current, hot environment) or too cold to operate safely. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - C1 Bat OVP, Battery over-voltage: The battery voltage has risen above the charger's safe limit, so charging stopped to protect the battery and inverter. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - C1 Bus OVP / C1 Boost OVP, Charger bus / boost over-voltage: An internal voltage rail in the battery charger (DC bus or boost stage) has exceeded its limit and the charger has stopped to protect itself. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - C1 Charger OCP / C1 Boost OCP, Charger / boost overcurrent: An overcurrent was detected in the battery charger or its boost stage, tripping protection. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - DM9000 Fault, Legacy DM9000 fault: Legacy X-Hybrid family: the inverter reported a DM9000 internal fault. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - RTC Fault, Real-time clock fault: The inverter reported a fault in its internal real-time clock. Safe checks now: Record the exact fault, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact the installer if the condition remains. Installer remedy: Follow the exact X1/X3-Hybrid G4 troubleshooting entry and use one controlled recovery only where documented. Escalate a recurring internal, sensing, communication or relay fault to SolaX. Applicability: family-level; X1-Hybrid G4 Series; exact model list not documented; Single-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X1-Hybrid G4 Series user manual. Current X1-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. | family-level; X3-Hybrid G4 Series; exact model list not documented; Three-phase hybrid inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SolaX X3-Hybrid G4 Series user manual, version 7 (Version 7). Current X3-Hybrid G4 family only. Exact models, Australian variant and firmware range are not confirmed; legacy C1/DM9000 entries are excluded. --- ## SolarEdge (residential, commercial three-phase, Synergy and TerraMax inverters): fault codes Source: https://wattbench.ai/solaredge-inverter-error-codes A reference compiled by Wattbench from SolarEdge's official Error Codes and Troubleshooting user guide (Version 1.1, January 2026). SolarEdge error codes are hexadecimal characters split by an x — for example 03x85 — shown on the inverter display where fitted and in the SolarEdge platform. This library covers all six tables in that guide: the communication list, the residential single- and three-phase list, the commercial three-phase list, the Synergy-technology list, the TerraMax utility list, and the warning-messages list. The guide reuses code numbers across tables for different faults — 8x1E and 8x22 each appear in both the commercial and TerraMax tables with different meanings and different instructions — so entries outside the residential list carry their section in the code, and both variants are published separately. Where the guide lists one code twice with genuinely conflicting instructions, the entry says so and carries both. A few rows contain errors in the guide's own layout, printing an instruction in the description column or splitting one procedure across both; those entries describe the defect rather than reproducing it as though it were the fault's meaning. The Synergy table is different in kind: it publishes only a code and an event-text constant, with no description or troubleshooting for any row, and the guide's own instruction for that whole table is to contact SolarEdge Support. Those 100 entries are therefore searchable but deliberately carry no remedy. Installer guidance throughout quotes the guide's own step for that exact row. Three TerraMax rows (33x47, 33x85, 33x86) are printed in the guide with an uppercase X separator; they are published here with the lowercase x the guide's own overview specifies, since search matches either. The guide does not establish the installed Australian variant or firmware. Safety note: owners should record the code and stop at safe visual observations. AC/DC isolation, electrical measurements, wiring, settings changes and opening equipment are licensed-worker tasks; ground-fault and arc codes in particular are shock hazards the guide itself gates behind qualified technicians. - 3xB · Communication, No Country Selected: Communication error codes list: No Country Selected. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Select the country. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x2 · Communication, Software Error: Communication error codes list: Software Error. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3xA · Communication, Phase is unbalanced: Communication error codes list: Phase is unbalanced. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Select Power Control -> Phase Balance -> Disable. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x11 · Communication, Arc detection status interrupt: Communication error codes list: Arc detection status interrupt. Safe checks now: Treat this as an electrical-safety event. Record the code and conditions, keep clear of the inverter and its wiring, and do not reset the unit or operate isolators; contact your installer promptly. Installer remedy: The guide's documented step for this code: Refer to Inverter Arc Detection and Interruption. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x6A · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x92 · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x93 · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x94 · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x95 · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x96 · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x97 · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x98 · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x99 · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x9A · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x9B · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x9C · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x9D · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x9E · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3xA7 · Communication, Country mismatch: Communication error codes list: Country mismatch. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Select the country. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x100 · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x10E · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x114 · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x125 · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x136 · Communication, RS485 / follower-detect condition (guide column error): The guide's row for this code carries an instruction in its description cell — "Verify the RS 485 connections between the Inverters. Perform Follower detect in Go." — rather than a description of the fault, and its troubleshooting cell repeats the generic device-locked steps used by the surrounding 3x92–3x138 rows. The guide prints no description of what this code means. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 3x138 · Communication, The device is locked, due to either human intervention, or automatically due to one or more…: Communication error codes list: The device is locked, due to either human intervention, or automatically due to one or more safety features. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Need to know why the system locked in the first place. · OFF/ON to Reconnect · Contact support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x2, Night Mode is an inverter status indicating that the input voltage is below 6V DC: Night Mode is an inverter status indicating that the input voltage is below 6V DC. Safe checks now: This is a status rather than a fault: the inverter reports its DC input below the operating threshold, which is normal outside daylight. Record it and contact your installer only if it shows when the array should be producing. Installer remedy: The guide's documented step for this code: Test the DC side and contact support for further guidance. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x9, Ground current surge: Ground current surge. Safe checks now: Treat this as an electrical-safety event. Record the code and conditions, keep clear of the inverter and its wiring, and do not reset the unit or operate isolators; contact your installer promptly. Installer remedy: The guide's documented step for this code: · Check the AC connection to the inverter · Check with the grid operator if a large surge source or irregular load exists near the site. · If the grid does not have problems contact SolarEdge support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2xA, Ground faults may occur due to insufficient insulation to the ground: Ground faults may occur due to insufficient insulation to the ground. Safe checks now: Treat this as an electrical-safety event. Record the code and conditions, keep clear of the inverter and its wiring, and do not reset the unit or operate isolators; contact your installer promptly. Installer remedy: The guide's documented step for this code: WARNING! ELECTRICAL SHOCK HAZARD. Do not touch uninsulated wires when the inverter cover is removed. RISQUE D’ÉLECTROCUTION, ne touchez pas les fils non isolés lorsque le couvercle de l'onduleur est retiré. Only a qualified technician should handle this problem, and only after taking proper precautions. 1. Turn the inverter ON/OFF switch to OFF. 2. Wait five minutes for the input capacitors to discharge. 3. Disconnect the AC breaker. 4. Disconnect the DC inputs. 5. Connect each DC string separately, turn the AC and the inverter ON/OFF switch to ON, until the error appears for the faulty string. · Do not connect strings with a grounding fault to the inverter. A certified installer must fix the faulty string before connecting it to the inverter · For further documentation, contact SolarEdge Support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2xD, Ground current surge: Ground current surge. Safe checks now: Treat this as an electrical-safety event. Record the code and conditions, keep clear of the inverter and its wiring, and do not reset the unit or operate isolators; contact your installer promptly. Installer remedy: The guide's documented step for this code: · Check the AC connection to the inverter · Check with the grid operator if a large surge source or irregular load exists near the site. · If the grid does not have problems contact SolarEdge support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2xE, AC voltage surge: AC voltage surge. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: If the fault persists: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2xF, The SolarEdge system normally eliminates DC overvoltage errors: The SolarEdge system normally eliminates DC overvoltage errors. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · If the fault persists: · Turn OFF the inverter ON/OFF switch. If after five minutes, the LCD panel does not show a low safety voltage (1V per optimizer), check which string is malfunctioning and recheck its connections to the inverter. · Proceed according to Power Optimizer Troubleshooting · Re-commission all inverters in the site, as described in Commissioning the Installation. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x10, Vref1V or Vref2V > +/-3%: Vref1V or Vref2V > +/-3%. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x11, Over temperature: Over temperature. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify proper inverter clearances. · Make sure the heat-sink fins are clean and unobstructed. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x13, SW error: SW error. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x18, Broken or unconnected temperature sensor: Broken or unconnected temperature sensor. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x19, PV solar array is not properly isolated from ground earth: PV solar array is not properly isolated from ground earth. Safe checks now: Treat this as an electrical-safety event. Record the code and conditions, keep clear of the inverter and its wiring, and do not reset the unit or operate isolators; contact your installer promptly. Installer remedy: The guide's documented step for this code: · Check the PV installation for isolation problems and ground leakage. · Only a certified PV installer must fix the faulty string before connecting it to the inverter. · Refer to www.solaredge.us/files/pdfs/application_note_isolation_fault_troubleshooting.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x1A, 2x1A: the guide prints no description for this code — its row carries only the instruction to contact SolarEdge Support, in the description column. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code is to contact SolarEdge Support. It gives no field procedure, so preserve the event evidence and escalate rather than improvising one. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x1C, 2x1C: the guide prints no description for this code — its row carries only the instruction to contact SolarEdge Support, in the description column. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code is to contact SolarEdge Support. It gives no field procedure, so preserve the event evidence and escalate rather than improvising one. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x1D, Line to Neutral voltage is above threshold: Line to Neutral voltage is above threshold. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check the grid connection. · Check the GND connection. · Check the L1, L2 and Neutral connections. · Verify symmetric load between L1, and L2 · Consult the local grid authority. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x1E, Line to Neutral voltage is below threshold: Line to Neutral voltage is below threshold. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check the grid connection. · Check the GND connection. · Check the L1, L2 and Neutral connections. · Verify symmetric load between L1, and L2 · Consult the local grid authority. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x1F, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x20, Grid voltage is below the country limit: Grid voltage is below the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x21, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x25, Ground faults may occur due to insufficient insulation to the ground: Ground faults may occur due to insufficient insulation to the ground. Safe checks now: Treat this as an electrical-safety event. Record the code and conditions, keep clear of the inverter and its wiring, and do not reset the unit or operate isolators; contact your installer promptly. Installer remedy: The guide's documented step for this code: WARNING! ELECTRICAL SHOCK HAZARD. Do not touch uninsulated wires when the inverter cover is removed. RISQUE D’ÉLECTROCUTION, ne touchez pas les fils non isolés lorsque le couvercle de l'onduleur est retiré. Only a qualified technician should handle this problem, and only after taking proper precautions. 1. Turn the inverter ON/OFF switch to OFF. 2. Wait five minutes for the input capacitors to discharge. 3. Disconnect the AC breaker. 4. Disconnect the DC inputs. 5. Connect each DC string separately, turn the AC and the inverter ON/OFF switch to ON, until the error appears for the faulty string. · Do not connect strings with a grounding fault to the inverter. A certified installer must fix the faulty string before connecting it to the inverter · For further documentation, contact SolarEdge Support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x26, Ground faults may occur due to insufficient insulation to the ground: Ground faults may occur due to insufficient insulation to the ground. Safe checks now: Treat this as an electrical-safety event. Record the code and conditions, keep clear of the inverter and its wiring, and do not reset the unit or operate isolators; contact your installer promptly. Installer remedy: The guide's documented step for this code: WARNING! ELECTRICAL SHOCK HAZARD. Do not touch uninsulated wires when the inverter cover is removed. RISQUE D’ÉLECTROCUTION, ne touchez pas les fils non isolés lorsque le couvercle de l'onduleur est retiré. Only a qualified technician should handle this problem, and only after taking proper precautions. 1. Turn the inverter ON/OFF switch to OFF. 2. Wait five minutes for the input capacitors to discharge. 3. Disconnect the AC breaker. 4. Disconnect the DC inputs. 5. Connect each DC string separately, turn the AC and the inverter ON/OFF switch to ON, until the error appears for the faulty string. · Do not connect strings with a grounding fault to the inverter. A certified installer must fix the faulty string before connecting it to the inverter · For further documentation, contact SolarEdge Support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x28, Grid is down: Grid is down. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: When AC grid voltage returns, the inverter will restart after the reconnection time. If the problem persists, consult with the grid operator. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x29, Grid voltage is below the country limit: Grid voltage is below the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x2C, No country selected: No country selected. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Select the country. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x2D, Portia - DSP1 comm error (3x2): Portia - DSP1 comm error (3x2). Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x95, Power train error: Power train error. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x96, Arc-DSP1: Arc-DSP1. Safe checks now: Treat this as an electrical-safety event. Record the code and conditions, keep clear of the inverter and its wiring, and do not reset the unit or operate isolators; contact your installer promptly. Installer remedy: The guide's documented step for this code: Refer to Inverter Arc Detection and Interruption. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x97, Arc-DSP2: Arc-DSP2. Safe checks now: Treat this as an electrical-safety event. Record the code and conditions, keep clear of the inverter and its wiring, and do not reset the unit or operate isolators; contact your installer promptly. Installer remedy: The guide's documented step for this code: Refer to Inverter Arc Detection and Interruption. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2x98, Tx test (previously known as arc test error): Tx test (previously known as arc test error). Safe checks now: Treat this as an electrical-safety event. Record the code and conditions, keep clear of the inverter and its wiring, and do not reset the unit or operate isolators; contact your installer promptly. Installer remedy: The guide's documented step for this code: Refer to Inverter Arc Detection and Interruption. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 2xB5, Relay feedback: Relay feedback. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x3, Night Mode is an inverter status indicating that the input voltage is below 6V DC: Night Mode is an inverter status indicating that the input voltage is below 6V DC. Safe checks now: This is a status rather than a fault: the inverter reports its DC input below the operating threshold, which is normal outside daylight. Record it and contact your installer only if it shows when the array should be producing. Installer remedy: The guide's documented step for this code: Test the DC side and contact support for further guidance. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x19, AC voltage surge: AC voltage surge. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: AC voltage surge. If the fault persists: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · erify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x1A, AC voltage surge: AC voltage surge. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: AC voltage surge. If the fault persists: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · erify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x1B, AC voltage surge: AC voltage surge. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: If the fault persists: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · erify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x1C, Line voltage is low: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x1D, Line voltage is low: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x1E, Line voltage is low: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x1F, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x20, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x21, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x22, Line voltage is low: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x23, Line voltage is low: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x24, Line voltage is low: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x25, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x26, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x27, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x28, Line voltage is low: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x29, Line voltage is low: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x2A, Line voltage is low: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x2B, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x2C, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x2D, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x2E, Line voltage is low: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x2F, Line voltage is low: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x30, Line voltage is low: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x31, Line voltage is high: Line voltage is high. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x32, Line voltage is high: Line voltage is high. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x33, Line voltage is high: Line voltage is high. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x34, Line voltage is low: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x35, Line voltage is low: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x36, Line voltage is low: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x37, Line voltage is high: Line voltage is high. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x38, Line voltage is low: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x39, If the error flags on all three phases at the same time, there is most likely a DC related…: If the error flags on all three phases at the same time, there is most likely a DC related issue on site. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Try landing one string at a time to the inverter, as well as swap strings between inverters (if there are multiple inverters), to see if the issue stays with the inverter or moved with the strings. · If the issue moves with the strings, there is likely an issue in the DC strings that need resolving, including but not limited to: Improper installation, improper stringing and design, etc. · Contact Support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x3B, If the error flags on all three phases at the same time, there is most likely a DC related…: If the error flags on all three phases at the same time, there is most likely a DC related issue on site. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Try landing one string at a time to the inverter, as well as swap strings between inverters (if there are multiple inverters), to see if the issue stays with the inverter or moved with the strings. · If the issue moves with the strings, there is likely an issue in the DC strings that need resolving, including but not limited to: Improper installation, improper stringing and design, etc. · Contact Support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x3C, If the error flags on all three phases at the same time, there is most likely a DC related…: If the error flags on all three phases at the same time, there is most likely a DC related issue on site. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Try landing one string at a time to the inverter, as well as swap strings between inverters (if there are multiple inverters), to see if the issue stays with the inverter or moved with the strings. · If the issue moves with the strings, there is likely an issue in the DC strings that need resolving, including but not limited to: Improper installation, improper stringing and design, etc. · Contact Support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x40, The frequency measured on L1 is higher than the thresholds: The frequency measured on L1 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x41, The frequency measured on L2 is higher than the thresholds: The frequency measured on L2 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x42, The frequency measured on L3 is higher than the thresholds: The frequency measured on L3 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x43, The frequency measured on L1 is lower than the thresholds: The frequency measured on L1 is lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x44, The frequency measured on L2 is Lower than the thresholds: The frequency measured on L2 is Lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code Verify AC frequency and voltages on site. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x45, The frequency measured on L3 is Lower than the thresholds: The frequency measured on L3 is Lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x46, The frequency measured on L1 is higher than the thresholds: The frequency measured on L1 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x47, The frequency measured on L2 is higher than the thresholds: The frequency measured on L2 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x48, The frequency measured on L3 is higher than the thresholds: The frequency measured on L3 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x49, The frequency measured on L1 is lower than the thresholds: The frequency measured on L1 is lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x4A, The frequency measured on L2 is Lower than the thresholds: The frequency measured on L2 is Lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x4B, The frequency measured on L3 is Lower than the thresholds: The frequency measured on L3 is Lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x4C, The frequency measured on L1 is higher than the thresholds: The frequency measured on L1 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x4D, The frequency measured on L2 is higher than the thresholds: The frequency measured on L2 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x4E, The frequency measured on L3 is higher than the thresholds: The frequency measured on L3 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x4F, The frequency measured on L1 is lower than the thresholds: The frequency measured on L1 is lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x50, The frequency measured on L2 is Lower than the thresholds: The frequency measured on L2 is Lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x51, The frequency measured on L3 is Lower than the thresholds: The frequency measured on L3 is Lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x52, The frequency measured on L1 is higher than the thresholds: The frequency measured on L1 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x53, The frequency measured on L2 is higher than the thresholds: The frequency measured on L2 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x54, The frequency measured on L3 is higher than the thresholds: The frequency measured on L3 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x55, The frequency measured on L1 is lower than the thresholds: The frequency measured on L1 is lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x56, The frequency measured on L2 is Lower than the thresholds: The frequency measured on L2 is Lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x57, The frequency measured on L3 is Lower than the thresholds: The frequency measured on L3 is Lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x58, The frequency measured on L1 is higher than the thresholds: The frequency measured on L1 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x59, The frequency measured on L2 is higher than the thresholds: The frequency measured on L2 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x5A, The frequency measured on L3 is higher than the thresholds: The frequency measured on L3 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x5B, The frequency measured on L1 is lower than the thresholds: The frequency measured on L1 is lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x5C, The frequency measured on L2 is Lower than the thresholds: The frequency measured on L2 is Lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x5D, The frequency measured on L3 is Lower than the thresholds: The frequency measured on L3 is Lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x60, Grid is down: Grid is down. When AC grid voltage returns the inverter will restart after the reconnection time. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: If the problem persists, consult with the grid operator. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x62, Grid is down: Grid is down. When AC grid voltage returns the inverter will restart after the reconnection time. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: If the problem persists, consult with the grid operator. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x6F, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x70, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18x71, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xB5, DC/AC in-stage overvoltage: DC/AC in-stage overvoltage. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA related. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xB6, DC/AC out-stage overvoltage: DC/AC out-stage overvoltage. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA related. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xB7, DC/AC in-stage overvoltage: DC/AC in-stage overvoltage. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA related. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xB8, DC/AC out-stage overvoltage: DC/AC out-stage overvoltage. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA related. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xB9, DC/DC in-stage overvoltage: DC/DC in-stage overvoltage. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA related. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xBA, DC/DC out-stage overvoltage: DC/DC out-stage overvoltage. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA related. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xBB, Vin min: Vin min. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide gives no troubleshooting for this code. Record the event and escalate to SolarEdge support rather than improvising a procedure. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xBC, Power module voltage imbalance: Power module voltage imbalance. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA related. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xBD, Power module voltage imbalance: Power module voltage imbalance. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA related. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xD8, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xD9, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xDA, Grid voltage is above the country limit: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xDB, Grid voltage is below the country limit: Grid voltage is below the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xDC, Grid voltage is below the country limit: Grid voltage is below the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xDD, Grid voltage is below the country limit: Grid voltage is below the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values.. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xDE, The frequency measured on L1 is lower than the thresholds: The frequency measured on L1 is lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xDF, The frequency measured on L2 is Lower than the thresholds: The frequency measured on L2 is Lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xE0, The frequency measured on L3 is Lower than the thresholds: The frequency measured on L3 is Lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xE1, The frequency measured on L1 is lower than the thresholds: The frequency measured on L1 is lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xE2, The frequency measured on L2 is higher than the thresholds: The frequency measured on L2 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xE3, The frequency measured on L3 is higher than the thresholds: The frequency measured on L3 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xE4, The line to neutral voltage on the AC side of the system is out of range, based on the trip…: The line to neutral voltage on the AC side of the system is out of range, based on the trip points set by the country code. The guide lists this code more than once; its other entry instead gives: Contact SolarEdge Support. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. The guide's other listing for this code instead gives: Contact SolarEdge Support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 18xE5, The line to neutral voltage on the AC side of the system is out of range, based on the trip…: The line to neutral voltage on the AC side of the system is out of range, based on the trip points set by the country code. The guide lists this code more than once; its other entry instead gives: Contact SolarEdge Support. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. The guide's other listing for this code instead gives: Contact SolarEdge Support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x3 · Commercial, Night Mode is an inverter status indicating that the input voltage is below 6V DC: Commercial three-phase inverters: Night Mode is an inverter status indicating that the input voltage is below 6V DC. Safe checks now: This is a status rather than a fault: the inverter reports its DC input below the operating threshold, which is normal outside daylight. Record it and contact your installer only if it shows when the array should be producing. Installer remedy: The guide's documented step for this code: · Test the DC side · Contact support for further guidance. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x10 · Commercial, Communication: Commercial three-phase inverters: Communication. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x11 · Commercial, Unexpected Mode: Commercial three-phase inverters: Unexpected Mode. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x12 · Commercial, Vf ESR meas: Commercial three-phase inverters: Vf ESR meas. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x13 · Commercial, Reset\Stop: Commercial three-phase inverters: Reset\Stop. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x16 · Commercial, Main Capacitor estimation event: Commercial three-phase inverters: Main Capacitor estimation event. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x18 · Commercial, RSD Error: Commercial three-phase inverters: RSD Error. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x19 · Commercial, AC voltage surge: Commercial three-phase inverters: AC voltage surge. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x1A · Commercial, AC voltage surge: Commercial three-phase inverters: AC voltage surge. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: If the fault persists: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x1B · Commercial, AC voltage surge: Commercial three-phase inverters: AC voltage surge. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: If the fault persists: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x1C · Commercial, Grid Voltage is below the country limit: Commercial three-phase inverters: Grid Voltage is below the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x1D · Commercial, Grid Voltage is below the country limit: Commercial three-phase inverters: Grid Voltage is below the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x1E · Commercial, Grid Voltage is below the country limit: Commercial three-phase inverters: Grid Voltage is below the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x1F · Commercial, Grid voltage is above the country limit: Commercial three-phase inverters: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x20 · Commercial, Grid voltage is above the country limit: Commercial three-phase inverters: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x21 · Commercial, Grid voltage is above the country limit: Commercial three-phase inverters: Grid voltage is above the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country. · Turn OFF the inverters in the site and verify AC grid voltage. · If the inverter is located far from the connection point to the grid, use a larger gauge AC wire. · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x22 · Commercial, Grid Voltage is below the country limit: Commercial three-phase inverters: Grid Voltage is below the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x23 · Commercial, Grid Voltage is below the country limit: Commercial three-phase inverters: Grid Voltage is below the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x24 · Commercial, Grid Voltage is below the country limit: Commercial three-phase inverters: Grid Voltage is below the country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x25 · Commercial, Grid voltage above country limit: Commercial three-phase inverters: Grid voltage above country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x26 · Commercial, Grid voltage below country limit: Commercial three-phase inverters: Grid voltage below country limit. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x27 · Commercial, If the error flags on all three phases at the same time, there is most likely a DC related…: Commercial three-phase inverters: If the error flags on all three phases at the same time, there is most likely a DC related issue on site. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Try landing one string at a time to the inverter, as well as swap strings between inverters (if there are multiple inverters), to see if the issue stays with the inverter or moved with the strings. · If the issue moves with the strings, there is likely an issue in the DC strings that need resolving, including but not limited to: Improper installation, improper stringing and design, etc. · Contact Support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x29 · Commercial, If the error flags on all three phases at the same time, there is most likely a DC related…: Commercial three-phase inverters: If the error flags on all three phases at the same time, there is most likely a DC related issue on site. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Try landing one string at a time to the inverter, as well as swap strings between inverters (if there are multiple inverters), to see if the issue stays with the inverter or moved with the strings. · If the issue moves with the strings, there is likely an issue in the DC strings that need resolving, including but not limited to: Improper installation, improper stringing and design, etc. · Contact Support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x2A · Commercial, If the error flags on all three phases at the same time, there is most likely a DC related…: Commercial three-phase inverters: If the error flags on all three phases at the same time, there is most likely a DC related issue on site. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Try landing one string at a time to the inverter, as well as swap strings between inverters (if there are multiple inverters), to see if the issue stays with the inverter or moved with the strings. · If the issue moves with the strings, there is likely an issue in the DC strings that need resolving, including but not limited to: Improper installation, improper stringing and design, etc. · Contact Support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x2B · Commercial, Ground faults may occur due to insufficient insulation to the ground: Commercial three-phase inverters: Ground faults may occur due to insufficient insulation to the ground. Safe checks now: Treat this as an electrical-safety event. Record the code and conditions, keep clear of the inverter and its wiring, and do not reset the unit or operate isolators; contact your installer promptly. Installer remedy: The guide's documented step for this code: WARNING! ELECTRICAL SHOCK HAZARD. Do not touch uninsulated wires when the inverter cover is removed. RISQUE D’ÉLECTROCUTION, ne touchez pas les fils non isolés lorsque le couvercle de l'onduleur est retiré. Only a qualified technician should handle this problem, and only after taking proper precautions. 1. Turn the inverter ON/OFF switch to OFF. 2. Wait five minutes for the input capacitors to discharge. 3. Disconnect the AC breaker. 4. Disconnect the DC inputs. 5. Connect each DC string separately, turn the AC and the inverter ON/OFF switch to ON, until the error appears for the faulty string. · Do not connect strings with a grounding fault to the inverter. A certified installer must fix the faulty string before connecting it to the inverter · For further documentation, contact SolarEdge Support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x2C · Commercial, Ground faults may occur due to insufficient insulation to the ground: Commercial three-phase inverters: Ground faults may occur due to insufficient insulation to the ground. Safe checks now: Treat this as an electrical-safety event. Record the code and conditions, keep clear of the inverter and its wiring, and do not reset the unit or operate isolators; contact your installer promptly. Installer remedy: The guide's documented step for this code: WARNING! ELECTRICAL SHOCK HAZARD. Do not touch uninsulated wires when the inverter cover is removed. RISQUE D’ÉLECTROCUTION, ne touchez pas les fils non isolés lorsque le couvercle de l'onduleur est retiré. Only a qualified technician should handle this problem, and only after taking proper precautions. 1. Turn the inverter ON/OFF switch to OFF. 2. Wait five minutes for the input capacitors to discharge. 3. Disconnect the AC breaker. 4. Disconnect the DC inputs. 5. Connect each DC string separately, turn the AC and the inverter ON/OFF switch to ON, until the error appears for the faulty string. · Do not connect strings with a grounding fault to the inverter. A certified installer must fix the faulty string before connecting it to the inverter · For further documentation, contact SolarEdge Support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x2E · Commercial, The frequency measured on L1 is higher than the thresholds: Commercial three-phase inverters: The frequency measured on L1 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x2F · Commercial, The frequency measured on L2 is higher than the thresholds: Commercial three-phase inverters: The frequency measured on L2 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x30 · Commercial, The frequency measured on L3 is higher than the thresholds: Commercial three-phase inverters: The frequency measured on L3 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x31 · Commercial, The frequency measured on L1 is Lower than the thresholds: Commercial three-phase inverters: The frequency measured on L1 is Lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x32 · Commercial, The frequency measured on L2 is Lower than the thresholds: Commercial three-phase inverters: The frequency measured on L2 is Lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x33 · Commercial, The frequency measured on L3 is Lower than the thresholds: Commercial three-phase inverters: The frequency measured on L3 is Lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x34 · Commercial, The SolarEdge system normally eliminates DC overvoltage errors: Commercial three-phase inverters: The SolarEdge system normally eliminates DC overvoltage errors. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: If the fault persists: · Turn OFF the inverter ON/OFF switch. If after five minutes, the LCD panel does not show a low safety voltage (1V per optimizer), check which string is malfunctioning and recheck its connections to the inverter. · Proceed according to Power Optimizer Troubleshooting · Re-commission all inverters in the site, as described in Commissioning the Installation. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x35 · Commercial, The SolarEdge system normally eliminates DC overvoltage errors: Commercial three-phase inverters: The SolarEdge system normally eliminates DC overvoltage errors. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: If the fault persists: · Turn OFF the inverter ON/OFF switch. If after five minutes, the LCD panel does not show a low safety voltage (1V per optimizer), check which string is malfunctioning and recheck its connections to the inverter. · Proceed according to Power Optimizer Troubleshooting · Re-commission all inverters in the site, as described in Commissioning the Installation. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x36 · Commercial, AC grid voltage malfunction: Commercial three-phase inverters: AC grid voltage malfunction. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · When AC voltage returns the inverter should restart after the reconnection time. · If the problem persists, consult with the grid operator. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x37 · Commercial, The SolarEdge system normally eliminates DC overvoltage errors: Commercial three-phase inverters: The SolarEdge system normally eliminates DC overvoltage errors. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: If the fault persists: · Turn OFF the inverter ON/OFF switch. If after five minutes, the LCD panel does not show a low safety voltage (1V per optimizer), check which string is malfunctioning and recheck its connections to the inverter. · Proceed according to Power Optimizer Troubleshooting · Re-commission all inverters in the site, as described in Commissioning the Installation. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x38 · Commercial, AC grid voltage malfunction: Commercial three-phase inverters: AC grid voltage malfunction. When AC voltage returns the inverter should restart after the reconnection time. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: If the problem persists, consult with the grid operator. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x39 · Commercial, Ground faults may occur due to insufficient insulation to the ground: Commercial three-phase inverters: Ground faults may occur due to insufficient insulation to the ground. Safe checks now: Treat this as an electrical-safety event. Record the code and conditions, keep clear of the inverter and its wiring, and do not reset the unit or operate isolators; contact your installer promptly. Installer remedy: The guide's documented step for this code: WARNING! ELECTRICAL SHOCK HAZARD. Do not touch uninsulated wires when the inverter cover is removed. RISQUE D’ÉLECTROCUTION, ne touchez pas les fils non isolés lorsque le couvercle de l'onduleur est retiré. Only a qualified technician should handle this problem, and only after taking proper precautions. 1. Turn the inverter ON/OFF switch to OFF. 2. Wait five minutes for the input capacitors to discharge. 3. Disconnect the AC breaker. 4. Disconnect the DC inputs. 5. Connect each DC string separately, turn the AC and the inverter ON/OFF switch to ON, until the error appears for the faulty string. · Do not connect strings with a grounding fault to the inverter. A certified installer must fix the faulty string before connecting it to the inverter · For further documentation, contact SolarEdge Support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x42 · Commercial, Grid Voltage Spike: Commercial three-phase inverters: Grid Voltage Spike. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x43 · Commercial, Grid Voltage Spike: Commercial three-phase inverters: Grid Voltage Spike. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x44 · Commercial, Grid Voltage Spike: Commercial three-phase inverters: Grid Voltage Spike. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify that the inverter is set to the correct country · Consult the grid operator. · If permitted by local authorities, change the grid protection values. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x45 · Commercial, DC Voltage Spike: Commercial three-phase inverters: DC Voltage Spike. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x46 · Commercial, DC Voltage Spike: Commercial three-phase inverters: DC Voltage Spike. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x47 · Commercial, Over temperature: Commercial three-phase inverters: Over temperature. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify proper inverter clearances. · Make sure the heat-sink fins are clean and unobstructed. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x48 · Commercial, Under temperature: Commercial three-phase inverters: Under temperature. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Make sure the inverter is installed in a location with ambient temperatures within the range specified in the datasheet. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x4F · Commercial, Wrong AC connection: Commercial three-phase inverters: Wrong AC connection. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Switch between L1 and L2 or L2 and L3 connections. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x52 · Commercial, VDC+/- capacitors banks unbalanced: Commercial three-phase inverters: VDC+/- capacitors banks unbalanced. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x53 · Commercial, VNN error: Commercial three-phase inverters: VNN error. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x54 · Commercial, Low power: Commercial three-phase inverters: Low power. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x56 · Commercial, Power train error: Commercial three-phase inverters: Power train error. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact support RMA. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x57 · Commercial, Broken or unconnected temperature sensor: Commercial three-phase inverters: Broken or unconnected temperature sensor. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x58 · Commercial, PV solar array is not properly isolated from ground earth: Commercial three-phase inverters: PV solar array is not properly isolated from ground earth. Safe checks now: Treat this as an electrical-safety event. Record the code and conditions, keep clear of the inverter and its wiring, and do not reset the unit or operate isolators; contact your installer promptly. Installer remedy: The guide's documented step for this code: · Check the PV installation for isolation problems and ground leakage. · Only a certified PV installer must fix the faulty string before connecting it to the inverter. · Refer to www.solaredge.us/files/pdfs/application_note_isolation_fault_troubleshooting.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x59 · Commercial, Relay Test: Commercial three-phase inverters: Relay Test. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x5B · Commercial, RCD Test: Commercial three-phase inverters: RCD Test. Safe checks now: Treat this as an electrical-safety event. Record the code and conditions, keep clear of the inverter and its wiring, and do not reset the unit or operate isolators; contact your installer promptly. Installer remedy: The guide's documented step for this code: Contact SolarEdge support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x5D · Commercial, Test Iso Test: Commercial three-phase inverters: Test Iso Test. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x6A · Commercial, Cooling-fan check (guide column error): The guide's row for this code is split across its two columns by a layout error: the description cell holds only the first step, "Power off AC to the inverter", and the troubleshooting cell holds the rest of the same fan-inspection procedure, ending with "Power on AC to the inverter". The code itself concerns a cooling fan; the guide prints no separate description of the fault. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify the specified fan is plugged in, has no damage to the wiring, and has no debris caught in the fan that could prevent it from spinning · Fan 1: External - Usually found on the bottom of the inverter screwed in with a small grate cover · Fan 2: Internal - Usually found on or near one of the boards inside the inverter · Power on AC to the inverter. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x6B · Commercial, Cooling-fan check (guide column error): The guide's row for this code is split across its two columns by a layout error: the description cell holds only the first step, "Power off AC to the inverter", and the troubleshooting cell holds the rest of the same fan-inspection procedure, ending with "Power on AC to the inverter". The code itself concerns a cooling fan; the guide prints no separate description of the fault. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify the specified fan is plugged in, has no damage to the wiring, and has no debris caught in the fan that could prevent it from spinning · Fan 1: External - Usually found on the bottom of the inverter screwed in with a small grate cover · Fan 2: Internal - Usually found on or near one of the boards inside the inverter · Power on AC to the inverter. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x75 · Commercial, Capacitor over voltage: Commercial three-phase inverters: Capacitor over voltage. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x76 · Commercial, Capacitor over voltage: Commercial three-phase inverters: Capacitor over voltage. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x77 · Commercial, Over temperature: Commercial three-phase inverters: Over temperature. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify proper inverter clearances. · Make sure the heat-sink fins are clean and unobstructed. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x78 · Commercial, Over temperature: Commercial three-phase inverters: Over temperature. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify proper inverter clearances. · Make sure the heat-sink fins are clean and unobstructed.. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x79 · Commercial, Over temperature: Commercial three-phase inverters: Over temperature. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Verify proper inverter clearances. · Make sure the heat-sink fins are clean and unobstructed. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x7A · Commercial, Over current: Commercial three-phase inverters: Over current. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x7B · Commercial, Over current: Commercial three-phase inverters: Over current. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x7C · Commercial, Over current: Commercial three-phase inverters: Over current. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x7D · Commercial, Driver Short: Commercial three-phase inverters: Driver Short. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x7E · Commercial, Driver Short: Commercial three-phase inverters: Driver Short. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x7F · Commercial, Driver Short: Commercial three-phase inverters: Driver Short. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x80 · Commercial, Balancer Fault: Commercial three-phase inverters: Balancer Fault. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x81 · Commercial, RCD Over Current: Commercial three-phase inverters: RCD Over Current. Safe checks now: Treat this as an electrical-safety event. Record the code and conditions, keep clear of the inverter and its wiring, and do not reset the unit or operate isolators; contact your installer promptly. Installer remedy: The guide's documented step for this code: Contact Support RMA. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x82 · Commercial, EVENT_NC_TZ: Commercial three-phase inverters: EVENT_NC_TZ. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x83 · Commercial, Global Fault: Commercial three-phase inverters: Global Fault. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact Support RMA. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x87 · Commercial, The frequency measured on L1 is higher than the thresholds: Commercial three-phase inverters: The frequency measured on L1 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x88 · Commercial, The frequency measured on L2 is higher than the thresholds: Commercial three-phase inverters: The frequency measured on L2 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x89 · Commercial, The frequency measured on L3 is higher than the thresholds: Commercial three-phase inverters: The frequency measured on L3 is higher than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x8A · Commercial, The frequency measured on L1 is Lower than the thresholds: Commercial three-phase inverters: The frequency measured on L1 is Lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x8B · Commercial, The frequency measured on L2 is lower than the thresholds: Commercial three-phase inverters: The frequency measured on L2 is lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x8C · Commercial, The frequency measured on L3 is lower than the thresholds: Commercial three-phase inverters: The frequency measured on L3 is lower than the thresholds. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Reselect country code · Verify AC frequency and voltages on site. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x0 · Synergy, WAKEUP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text WAKEUP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x1 · Synergy, LOCATION_ACQUIRING: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text LOCATION_ACQUIRING, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x2 · Synergy, SPD_ENABLED: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text SPD_ENABLED, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x3 · Synergy, BATTERY_CONNECTED: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text BATTERY_CONNECTED, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x4 · Synergy, BATTERY_DISCONNECTED: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text BATTERY_DISCONNECTED, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x5 · Synergy, PD_EVENT: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text PD_EVENT, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x6 · Synergy, PID_ACTIVATED: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text PID_ACTIVATED, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x7 · Synergy, PID_DEACTIVATED: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text PID_DEACTIVATED, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x8 · Synergy, ERROR_PID_DISCHARGE: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text ERROR_PID_DISCHARGE, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x9 · Synergy, ERROR_PID_NO_DC_READ: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text ERROR_PID_NO_DC_READ, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32xA · Synergy, DC_SWITCH_TOGGLE: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text DC_SWITCH_TOGGLE, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32xB · Synergy, ERROR_PID_OUT_V_DONT_RISE: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text ERROR_PID_OUT_V_DONT_RISE, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32xC · Synergy, ERROR_PID_NIGHT_OVER_VOLTAGE: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text ERROR_PID_NIGHT_OVER_VOLTAGE, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32xD · Synergy, ERROR_PID_NIGHT_UNDER_VOLTAGE: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text ERROR_PID_NIGHT_UNDER_VOLTAGE, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32xE · Synergy, WAKEUP_NUMBER_OF_RESET: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text WAKEUP_NUMBER_OF_RESET, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32xF · Synergy, APP_UPGRADE_FAIL: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text APP_UPGRADE_FAIL, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x10 · Synergy, ERROR_SPD_DC_LEFT_TRIGGERED: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text ERROR_SPD_DC_LEFT_TRIGGERED, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x11 · Synergy, ERROR_SPD_DC_CENTER_TRIGGERED: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text ERROR_SPD_DC_CENTER_TRIGGERED, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x12 · Synergy, ERROR_SPD_DC_RIGHT_TRIGGERED: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text ERROR_SPD_DC_RIGHT_TRIGGERED, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x13 · Synergy, ERROR_SPD_AC_TRIGGERED: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text ERROR_SPD_AC_TRIGGERED, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x14 · Synergy, TEMPRATURE_DC_P_LEFT_WARNING_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_P_LEFT_WARNING_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x15 · Synergy, TEMPRATURE_DC_P_CENTER_WARNING_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_P_CENTER_WARNING_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x16 · Synergy, TEMPRATURE_DC_P_RIGHT_WARNING_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_P_RIGHT_WARNING_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x17 · Synergy, TEMPRATURE_DC_P_LEFT_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_P_LEFT_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x18 · Synergy, TEMPRATURE_DC_P_CENTER_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_P_CENTER_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x19 · Synergy, TEMPRATURE_DC_P_RIGHT_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_P_RIGHT_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x1A · Synergy, TEMPRATURE_DC_P_LEFT_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_P_LEFT_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x1B · Synergy, TEMPRATURE_DC_P_CENTER_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_P_CENTER_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x1C · Synergy, TEMPRATURE_DC_P_RIGHT_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_P_RIGHT_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x1D · Synergy, TEMPRATURE_DC_N_LEFT_WARNING_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_N_LEFT_WARNING_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x1E · Synergy, TEMPRATURE_DC_N_CENTER_WARNING_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_N_CENTER_WARNING_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x1F · Synergy, TEMPRATURE_DC_N_RIGHT_WARNING_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_N_RIGHT_WARNING_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x20 · Synergy, TEMPRATURE_DC_N_LEFT_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_N_LEFT_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x21 · Synergy, TEMPRATURE_DC_N_CENTER_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_N_CENTER_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x22 · Synergy, TEMPRATURE_DC_N_RIGHT_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_N_RIGHT_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x23 · Synergy, TEMPRATURE_DC_N_LEFT_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_N_LEFT_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x24 · Synergy, TEMPRATURE_DC_N_CENTER_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_N_CENTER_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x25 · Synergy, TEMPRATURE_DC_N_RIGHT_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_DC_N_RIGHT_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x26 · Synergy, TEMPRATURE_AC_L1_WARNING_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_AC_L1_WARNING_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x27 · Synergy, TEMPRATURE_AC_L2_WARNING_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_AC_L2_WARNING_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x28 · Synergy, TEMPRATURE_AC_L3_WARNING_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_AC_L3_WARNING_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x29 · Synergy, EVENT_TEMPRATURE_AMB_WARNING_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_AMB_WARNING_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x2A · Synergy, TEMPRATURE_AC_L1_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_AC_L1_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x2B · Synergy, TEMPRATURE_AC_L2_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_AC_L2_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x2C · Synergy, TEMPRATURE_AC_L3_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_AC_L3_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x2D · Synergy, EVENT_TEMPRATURE_AMB_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_AMB_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x2E · Synergy, TEMPRATURE_AC_L1_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_AC_L1_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x2F · Synergy, TEMPRATURE_AC_L2_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_AC_L2_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x30 · Synergy, TEMPRATURE_AC_L3_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text TEMPRATURE_AC_L3_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x31 · Synergy, EVENT_TEMPRATURE_AMB_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_AMB_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x32 · Synergy, EVENT_FAN_LOW_RPM_ERROR: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_FAN_LOW_RPM_ERROR, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x33 · Synergy, EVENT_FAN_HIGH_RPM_ERROR: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_FAN_HIGH_RPM_ERROR, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x34 · Synergy, EVENT_ABS_TEMPRATURE_DC_P_LEFT_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_DC_P_LEFT_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x35 · Synergy, EVENT_ABS_TEMPRATURE_DC_P_CENTER_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_DC_P_CENTER_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x36 · Synergy, EVENT_ABS_TEMPRATURE_DC_P_RIGHT_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_DC_P_RIGHT_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x37 · Synergy, EVENT_ABS_TEMPRATURE_DC_P_LEFT_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_DC_P_LEFT_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x38 · Synergy, EVENT_ABS_TEMPRATURE_DC_P_CENTER_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_DC_P_CENTER_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x39 · Synergy, EVENT_ABS_TEMPRATURE_DC_P_RIGHT_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_DC_P_RIGHT_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x3A · Synergy, EVENT_ABS_TEMPRATURE_DC_N_LEFT_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_DC_N_LEFT_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x3B · Synergy, EVENT_ABS_TEMPRATURE_DC_N_CENTER_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_DC_N_CENTER_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x3C · Synergy, EVENT_ABS_TEMPRATURE_DC_N_RIGHT_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_DC_N_RIGHT_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x3D · Synergy, EVENT_ABS_TEMPRATURE_DC_N_LEFT_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_DC_N_LEFT_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x3E · Synergy, EVENT_ABS_TEMPRATURE_DC_N_CENTER_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_DC_N_CENTER_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x3F · Synergy, EVENT_ABS_TEMPRATURE_DC_N_RIGHT_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_DC_N_RIGHT_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x40 · Synergy, EVENT_ABS_TEMPRATURE_AC_L1_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_AC_L1_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x41 · Synergy, EVENT_ABS_TEMPRATURE_AC_L2_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_AC_L2_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x42 · Synergy, EVENT_ABS_TEMPRATURE_AC_L3_CRITICAL_START: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_AC_L3_CRITICAL_START, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x43 · Synergy, EVENT_ABS_TEMPRATURE_AC_L1_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_AC_L1_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x44 · Synergy, EVENT_ABS_TEMPRATURE_AC_L2_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_AC_L2_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x45 · Synergy, EVENT_ABS_TEMPRATURE_AC_L3_WARNING_STOP: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ABS_TEMPRATURE_AC_L3_WARNING_STOP, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x46 · Synergy, EVENT_SPD_DC_LEFT_ENABLED: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_SPD_DC_LEFT_ENABLED, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x47 · Synergy, EVENT_SPD_DC_CENTER_ENABLED: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_SPD_DC_CENTER_ENABLED, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x48 · Synergy, EVENT_SPD_DC_RIGHT_ENABLED: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_SPD_DC_RIGHT_ENABLED, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x49 · Synergy, EVENT_SPD_AC_ENABLED: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_SPD_AC_ENABLED, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x4A · Synergy, EVENT_TEMPRATURE_DC_P_LEFT_LOCK: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_DC_P_LEFT_LOCK, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x4B · Synergy, EVENT_TEMPRATURE_DC_P_CENTER_LOCK: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_DC_P_CENTER_LOCK, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x4C · Synergy, EVENT_TEMPRATURE_DC_P_RIGHT_LOCK: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_DC_P_RIGHT_LOCK, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x4D · Synergy, EVENT_TEMPRATURE_DC_N_LEFT_LOCK: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_DC_N_LEFT_LOCK, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x4E · Synergy, EVENT_TEMPRATURE_DC_N_CENTER_LOCK: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_DC_N_CENTER_LOCK, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x4F · Synergy, EVENT_TEMPRATURE_DC_N_RIGHT_LOCK: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_DC_N_RIGHT_LOCK, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x50 · Synergy, EVENT_TEMPRATURE_AC_L1_LOCK: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_AC_L1_LOCK, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x51 · Synergy, EVENT_TEMPRATURE_AC_L2_LOCK: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_AC_L2_LOCK, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x52 · Synergy, EVENT_TEMPRATURE_AC_L3_LOCK: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_AC_L3_LOCK, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x53 · Synergy, EVENT_POWER_OFF: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_POWER_OFF, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x54 · Synergy, EVENT_WATCHDOG: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_WATCHDOG, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x55 · Synergy, EVENT_HARD_FAULT: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_HARD_FAULT, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x56 · Synergy, EVENT_ASSERT: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_ASSERT, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x57 · Synergy, EVENT_STACK_OVERFLOW: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_STACK_OVERFLOW, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x58 · Synergy, EVENT_HEAP_OVERFLOW: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_HEAP_OVERFLOW, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x59 · Synergy, EVENT_APPLICATION_RESET: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_APPLICATION_RESET, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x5A · Synergy, EVENT_TEMPRATURE_DC_P_LEFT_NTC_DISABLE: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_DC_P_LEFT_NTC_DISABLE, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x5B · Synergy, EVENT_TEMPRATURE_DC_P_CENTER_NTC_DISABLE: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_DC_P_CENTER_NTC_DISABLE, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x5C · Synergy, EVENT_TEMPRATURE_DC_P_RIGHT_NTC_DISABLE: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_DC_P_RIGHT_NTC_DISABLE, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x5D · Synergy, EVENT_TEMPRATURE_DC_N_LEFT_NTC_DISABLE: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_DC_N_LEFT_NTC_DISABLE, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x5E · Synergy, EVENT_TEMPRATURE_DC_N_CENTER_NTC_DISABLE: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_DC_N_CENTER_NTC_DISABLE, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x5F · Synergy, EVENT_TEMPRATURE_DC_N_RIGHT_NTC_DISABLE: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_DC_N_RIGHT_NTC_DISABLE, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x60 · Synergy, EVENT_TEMPRATURE_AC_L1_NTC_DISABLE: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_AC_L1_NTC_DISABLE, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x61 · Synergy, EVENT_TEMPRATURE_AC_L2_NTC_DISABLE: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_AC_L2_NTC_DISABLE, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x62 · Synergy, EVENT_TEMPRATURE_AC_L3_NTC_DISABLE: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_AC_L3_NTC_DISABLE, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 32x63 · Synergy, EVENT_TEMPRATURE_AMB_NTC_DISABLE: Commercial three-phase inverters with Synergy technology: the guide lists this code only as the event text EVENT_TEMPRATURE_AMB_NTC_DISABLE, with no description or troubleshooting of its own. Its stated instruction for that whole table is to contact SolarEdge Support for troubleshooting details. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33xD · TerraMax, The inverter fan is not working: TerraMax inverters: The inverter fan is not working. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check the physical cable connection · Clean the fan · Replace the fan · If issue remains, contact the SolarEdge Support team. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x10 · TerraMax, Internal communication error: TerraMax inverters: Internal communication error. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x14 · TerraMax, TerraMax™ PID Night: TerraMax inverters: TerraMax™ PID Night. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x19 · TerraMax, AC voltage surge: TerraMax inverters: AC voltage surge. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: If the fault persists: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x1A · TerraMax, AC voltage surge: TerraMax inverters: AC voltage surge. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: If the fault persists: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x1B · TerraMax, AC voltage surge: TerraMax inverters: AC voltage surge. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x1C · TerraMax, Line voltage is low: TerraMax inverters: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x1D · TerraMax, Line voltage is low: TerraMax inverters: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x1E · TerraMax, Line voltage is low: TerraMax inverters: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x1F · TerraMax, AC voltage surge: TerraMax inverters: AC voltage surge. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x20 · TerraMax, AC voltage surge: TerraMax inverters: AC voltage surge. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x21 · TerraMax, AC voltage surge: TerraMax inverters: AC voltage surge. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 8x22 · TerraMax, Line voltage is low: TerraMax inverters: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x23 · TerraMax, Line voltage is low: TerraMax inverters: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x24 · TerraMax, Line voltage is low: TerraMax inverters: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x25 · TerraMax, AC voltage surge: TerraMax inverters: AC voltage surge. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x26 · TerraMax, Line voltage is low: TerraMax inverters: Line voltage is low. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check the AC connection to inverter. · Verify that the inverter is set to the correct country. · Check with the grid operator if a large surge source or irregular load exists near the site. · Verify that the output wire size matches the distance between the inverter and the location of the grid connection. · Use a larger gauge wire for the AC output. · Refer to the AC Wiring Application Note at http://www.solaredge.us/files/pdfs/application-note-recommended-wiring.pdf. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x36 · TerraMax, Anti islanding: TerraMax inverters: Anti islanding. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x38 · TerraMax, Anti islanding: TerraMax inverters: Anti islanding. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x56 · TerraMax, Power train error: TerraMax inverters: Power train error. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x58 · TerraMax, Isolation Test: TerraMax inverters: Isolation Test. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x59 · TerraMax, Relay Test: TerraMax inverters: Relay Test. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33xB8 · TerraMax, Pairing Error: TerraMax inverters: Pairing Error. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Re-initiate pairing process. · If the issue persists, contact SolarEdge Support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33xB9 · TerraMax, Locked: TerraMax inverters: Locked. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: Contact SolarEdge Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x86 · TerraMax, The DC SPD is not functioning: TerraMax inverters: The DC SPD is not functioning. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Validate that the DC SPD board is installed correctly as instructed in the installation guide. · If the issue persists, it is possible that the DC SPD board absorbed an electrical surge. In this case, the board should be replaced. · Upon remediation of the failure, the event 33XDB is received. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x85 · TerraMax, The AC SPD is not functioning: TerraMax inverters: The AC SPD is not functioning. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Validate that the AC SPD board is installed correctly as instructed in the installation guide. · If the issue persists, it is possible that the AC SPD board absorbed an electrical surge. In this case, the board should be replaced. · Upon remediation of the failure, the event 33XDA is received. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x9C · TerraMax, The temperature of the Y of the AC terminal block is high/critical: TerraMax inverters: The temperature of the Y of the AC terminal block is high/critical. Y = L1 conductor, L2 conductor, L3 conductor. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Validate that the AC lugs are properly installed. · Validate that the torque of the screws in the AC terminal block is set to 35 Nm. · If the issue persists, contact the SolarEdge Support team. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 33x47 · TerraMax, Inverter temperature is critical, the production has stopped: TerraMax inverters: Inverter temperature is critical, the production has stopped. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, change settings or open equipment; contact your installer if the code remains. Installer remedy: The guide's documented step for this code: · Check that the inverter has been installed according to the instructions in the installation guide. · If the issue persists, contact the SolarEdge Support team. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - WARNING 1, Fan failure: The guide's warning-messages list gives the cause for this warning as "Fan Failure". Safe checks now: Record the warning and contact your installer. Do not open the inverter or attempt to inspect, clean or replace the fan yourself. Installer remedy: The guide's documented step for this warning: Contact Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - WARNING 2, Fan failure: The guide's warning-messages list gives the cause for this warning as "Fan Failure". Safe checks now: Record the warning and contact your installer. Do not open the inverter or attempt to inspect, clean or replace the fan yourself. Installer remedy: The guide's documented step for this warning: Contact Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - WARNING 3, Fan failure: The guide's warning-messages list gives the cause for this warning as "Fan Failure". Safe checks now: Record the warning and contact your installer. Do not open the inverter or attempt to inspect, clean or replace the fan yourself. Installer remedy: The guide's documented step for this warning: Contact Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - WARNING 4, Fan failure: The guide's warning-messages list gives the cause for this warning as "Fan Failure". Safe checks now: Record the warning and contact your installer. Do not open the inverter or attempt to inspect, clean or replace the fan yourself. Installer remedy: The guide's documented step for this warning: Contact Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - WARNING 5, Menu accessed during production: The guide's warning-messages list gives the cause for this warning as "Raised when trying to access Menus during production". Safe checks now: Record the warning and contact your installer. The action for this one is a control step on the inverter itself, which is an installer task rather than an owner task. Installer remedy: The guide's documented step for this warning: Turn Toggle Switch to OFF. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - WARNING 6, Fan failure: The guide's warning-messages list gives the cause for this warning as "Fan Failure". Safe checks now: Record the warning and contact your installer. Do not open the inverter or attempt to inspect, clean or replace the fan yourself. Installer remedy: The guide's documented step for this warning: Contact Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - WARNING 7, Fan failure: The guide's warning-messages list gives the cause for this warning as "Fan Failure". Safe checks now: Record the warning and contact your installer. Do not open the inverter or attempt to inspect, clean or replace the fan yourself. Installer remedy: The guide's documented step for this warning: Contact Support. Preserve the event evidence and escalate rather than improvising a field procedure beyond what the guide states. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. --- ## Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter and labelled deployed-firmware residues: fault codes Source: https://wattbench.ai/deye-inverter-fault-codes The reviewed remedies in this library apply only where the official SUN-(5–12)K-SG04LP3-AU fault table carries the same F-code. Deye F-numbers are not stable across firmware, regional variants or rebadged hardware. F08 and F35 are retained only as deployed-firmware search aids because neither code appears in the reviewed Deye AU table; their remedies therefore remain blank even though secondary and community reports describe them. Sunsynk material is rebadge evidence, not primary Deye evidence. F62 (DRMs0_stop) is the one code here the manual marks Australia-market-only, and it is a commanded DRM shutdown rather than a hardware fault. Confirm the exact model, region and firmware before acting. Safety note: owners should stop at recording visible app or display information. Isolation, configuration, testing, opening equipment and PV or battery cabling are licensed-electrician work and, where solar accreditation is required, work for an SAA-accredited person. - F01, DC input polarity reverse fault: The PV input is connected with reversed polarity (official manual: 'DC input polarity reverse fault'). Safe checks now: Record the exact code, model and time. Do not change installer settings, repeatedly restart the inverter or open equipment; contact the installer if the event remains. Installer remedy: Use Chart 7-1 in the SUN-(5–12)K-SG04LP3-AU manual for the documented check. Preserve settings as found, use only the exact controlled recovery procedure and escalate a persistent event to Deye. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F08, GFDI relay failure: The inverter's ground-fault detection (GFDI) relay has failed a self-test, or the neutral/earth bonding doesn't match the configured grid type. On deployed firmware and rebadged (Sunsynk) units this is one of the most-reported codes and is very often a grid-type setting mismatch (e.g. set to 120/240V split-phase when the system is actually single-phase) rather than a true hardware fault. (Note: the current official Deye AU and EU manuals do NOT list an F08 - they number the equivalent start/ground self-check as F07. Confirm against your unit's firmware.) Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - F13, Working mode / grid mode changed: An informational event, not a hardware fault. The official manual logs it when the grid type or frequency setting changes, when the battery mode is switched to 'No battery', or (on some older firmware) when the system work mode changes. It normally clears itself. Safe checks now: Record the exact code, model and time. Do not change installer settings, repeatedly restart the inverter or open equipment; contact the installer if the event remains. Installer remedy: Use Chart 7-1 in the SUN-(5–12)K-SG04LP3-AU manual for the documented check. Preserve settings as found, use only the exact controlled recovery procedure and escalate a persistent event to Deye. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F15, AC over-current (software): The inverter's software protection has detected excessive current on the AC side (listed in the official manual as 'AC over current fault of software'). Can be triggered by a heavy backup or common load, or by an AC sensing issue. Safe checks now: Note which backup or household loads were operating and reduce only ordinary appliance demand if safe to do so. Do not operate inverter isolators; contact the installer if the trip returns. Installer remedy: Check the connected backup/common load and relevant AC or DC connections against the SG04LP3-AU rating and Chart 7-1. Use the exact model procedure for any restart and escalate a recurring overcurrent. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F16, AC leakage current fault: The residual-current monitor has detected earth-leakage current above its threshold (official manual: 'AC leakage current fault'), which can indicate a PV array insulation problem or moisture in connectors. The manual's listed remedy focuses on the PV-side cable ground connection. Safe checks now: Record the alarm, time and weather conditions. Do not reset the inverter, touch PV cabling or open equipment; arrange a licensed inspection if the alarm persists or returns. Installer remedy: Follow the SG04LP3-AU fault-table checks for the PV earth, insulation or AFCI condition. Locate and rectify the source before returning the system to service; do not bypass a protection function. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F18, AC over-current (hardware): A hardware-level over-current trip on the AC side (official manual: 'AC over current fault of hardware'), typically from too much load on the backup and/or common-load outputs. Safe checks now: Note which backup or household loads were operating and reduce only ordinary appliance demand if safe to do so. Do not operate inverter isolators; contact the installer if the trip returns. Installer remedy: Check the connected backup/common load and relevant AC or DC connections against the SG04LP3-AU rating and Chart 7-1. Use the exact model procedure for any restart and escalate a recurring overcurrent. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F20, DC over-current (hardware): A hardware-level over-current trip on the DC side (PV or battery) - official manual: 'DC over current fault of the hardware'. Common when an off-grid/backup system is started into a large load, where inrush current briefly exceeds limits. Safe checks now: Note which backup or household loads were operating and reduce only ordinary appliance demand if safe to do so. Do not operate inverter isolators; contact the installer if the trip returns. Installer remedy: Check the connected backup/common load and relevant AC or DC connections against the SG04LP3-AU rating and Chart 7-1. Use the exact model procedure for any restart and escalate a recurring overcurrent. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F21, BUS over-current (Tz_HV_Overcurr_fault): A hardware-level over-current on the internal high-voltage DC bus (official manual: 'Tz_HV_Overcurr_fault - BUS over current'). Safe checks now: Record the exact code, model and time. Do not change installer settings, repeatedly restart the inverter or open equipment; contact the installer if the event remains. Installer remedy: Use Chart 7-1 in the SUN-(5–12)K-SG04LP3-AU manual for the documented check. Preserve settings as found, use only the exact controlled recovery procedure and escalate a persistent event to Deye. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F22, Emergency stop / remote shutdown (Tz_EmergStop_Fault): The inverter has been shut down by a remote-control or emergency-stop signal - it is being commanded off, not failing. The official manual states 'it tells the inverter is remotely controlled'. Safe checks now: Record the exact code, model and time. Do not change installer settings, repeatedly restart the inverter or open equipment; contact the installer if the event remains. Installer remedy: Use Chart 7-1 in the SUN-(5–12)K-SG04LP3-AU manual for the documented check. Preserve settings as found, use only the exact controlled recovery procedure and escalate a persistent event to Deye. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F23, Transient leakage / GFCI over-current (Tz_GFCI_OC_Fault): A transient earth-leakage (residual-current) over-current event, often linked to PV-side earthing. Confirmed in the official manual as 'Tz_GFCI_OC current is transient over current / leakage current fault'. Safe checks now: Record the alarm, time and weather conditions. Do not reset the inverter, touch PV cabling or open equipment; arrange a licensed inspection if the alarm persists or returns. Installer remedy: Follow the SG04LP3-AU fault-table checks for the PV earth, insulation or AFCI condition. Locate and rectify the source before returning the system to service; do not bypass a protection function. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F24, DC insulation / isolation impedance failure: PV insulation resistance to earth is too low - the array's isolation impedance has dropped (official manual: 'DC insulation failure - PV isolation resistance is too low'), which can mean a damaged cable, water ingress, or a faulty panel/connector. Safe checks now: Record the alarm, time and weather conditions. Do not reset the inverter, touch PV cabling or open equipment; arrange a licensed inspection if the alarm persists or returns. Installer remedy: Follow the SG04LP3-AU fault-table checks for the PV earth, insulation or AFCI condition. Locate and rectify the source before returning the system to service; do not bypass a protection function. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F26, DC busbar unbalanced: The internal DC busbar is unbalanced. The official manual notes it is logged when load across the phases is very uneven, and that it can also indicate DC leakage current. Safe checks now: Record the exact code, model and time. Do not change installer settings, repeatedly restart the inverter or open equipment; contact the installer if the event remains. Installer remedy: Use Chart 7-1 in the SUN-(5–12)K-SG04LP3-AU manual for the documented check. Preserve settings as found, use only the exact controlled recovery procedure and escalate a persistent event to Deye. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F29, Parallel CAN bus fault: A communication fault on the parallel-link (CAN) bus between inverters in a multi-unit/parallel system. The official manual notes it is normal to see this briefly while a parallel system is powering up, and it clears once all units are ON. Safe checks now: Record the exact code, model and time. Do not change installer settings, repeatedly restart the inverter or open equipment; contact the installer if the event remains. Installer remedy: Use Chart 7-1 in the SUN-(5–12)K-SG04LP3-AU manual for the documented check. Preserve settings as found, use only the exact controlled recovery procedure and escalate a persistent event to Deye. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F34, AC overload fault: The connected load exceeds what the inverter can supply (official manual: 'AC Overcurrent fault'), typically on the backup/EPS output. A common owner-facing code when too many appliances run at once on backup power. Safe checks now: Note which backup or household loads were operating and reduce only ordinary appliance demand if safe to do so. Do not operate inverter isolators; contact the installer if the trip returns. Installer remedy: Check the connected backup/common load and relevant AC or DC connections against the SG04LP3-AU rating and Chart 7-1. Use the exact model procedure for any restart and escalate a recurring overcurrent. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F35, No AC grid (AC_NoUtility_Fault): The inverter cannot detect a valid utility grid - i.e. the grid is absent or out of acceptable voltage/frequency range. Often simply a grid outage or a tripped supply breaker; on three-phase units it can also be caused by incorrect phase rotation/sequence. (Note: this F35 numbering is from deployed/Sunsynk firmware; the current official Deye manuals do not list an F35 - confirm against your unit.) Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - F41, Parallel system stop: In a parallel installation, one inverter has shut down, which causes the other paralleled inverters to report F41 and stop as a group (official manual: 'if there is 1 pcs hybrid inverter shutdown, all hybrid inverters will report F41'). Safe checks now: Record the exact code, model and time. Do not change installer settings, repeatedly restart the inverter or open equipment; contact the installer if the event remains. Installer remedy: Use Chart 7-1 in the SUN-(5–12)K-SG04LP3-AU manual for the documented check. Preserve settings as found, use only the exact controlled recovery procedure and escalate a persistent event to Deye. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F42, AC line low voltage: Measured grid (AC line) voltage is below the allowed range (official manual: 'AC line low voltage / grid voltage fault'). Frequently a grid-side condition (sagging supply) rather than an inverter fault. Safe checks now: Record the code, time and whether the premises supply appears normal. Do not change the grid profile or protection limits; contact the installer if the event repeats. Installer remedy: Check the measured grid condition and AC connection against Chart 7-1 for the SUN-(5–12)K-SG04LP3-AU. Preserve the approved grid profile and escalate a confirmed supply abnormality through the network process. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F46, Backup battery fault: A fault with the connected battery (or batteries). The official Deye AU and EU manuals decode F46 as 'backup battery fault' and advise checking each battery's status - voltage, SOC and parameter settings - and making sure all parameters match. (Earlier third-party lists mislabelled F46 as 'AC under-voltage'; the decoded official manuals do not support that - treat F46 as a battery fault.) Safe checks now: Record the code and visible battery state in the app. Do not change BMS protocols, voltage limits or battery settings; contact the installer if the alarm does not clear. Installer remedy: Check battery status, configured parameters, voltage and BMS communication against the SG04LP3-AU manual and the exact battery documentation. Correct mismatched setup before escalating a persistent fault. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F47, AC over-frequency: Grid frequency is above the allowed range, so the inverter disconnects per grid-protection (anti-islanding) rules. Usually a grid-side event. Safe checks now: Record the code, time and whether the premises supply appears normal. Do not change the grid profile or protection limits; contact the installer if the event repeats. Installer remedy: Check the measured grid condition and AC connection against Chart 7-1 for the SUN-(5–12)K-SG04LP3-AU. Preserve the approved grid profile and escalate a confirmed supply abnormality through the network process. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F48, AC under-frequency: Grid frequency is below the allowed range, so the inverter disconnects per grid-protection rules (official manual: 'AC lower frequency - grid frequency out of range'). Usually a grid-side event. Safe checks now: Record the code, time and whether the premises supply appears normal. Do not change the grid profile or protection limits; contact the installer if the event repeats. Installer remedy: Check the measured grid condition and AC connection against Chart 7-1 for the SUN-(5–12)K-SG04LP3-AU. Preserve the approved grid profile and escalate a confirmed supply abnormality through the network process. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F55, DC bus voltage too high: The internal DC bus (busbar) voltage is too high (official manual: 'DC busbar voltage is too high - BUS voltage is too high') - typically because battery voltage or PV input voltage is above the allowed range. Safe checks now: Record the code and visible battery state in the app. Do not change BMS protocols, voltage limits or battery settings; contact the installer if the alarm does not clear. Installer remedy: Check battery status, configured parameters, voltage and BMS communication against the SG04LP3-AU manual and the exact battery documentation. Correct mismatched setup before escalating a persistent fault. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F56, DC bus voltage too low: The internal DC bus (busbar) voltage is too low - most often a flat or very low battery, or insufficient PV. Confirmed in the official manual as 'DC busbar voltage is too low - battery voltage low'. Safe checks now: Record the code and visible battery state in the app. Do not change BMS protocols, voltage limits or battery settings; contact the installer if the alarm does not clear. Installer remedy: Check battery status, configured parameters, voltage and BMS communication against the SG04LP3-AU manual and the exact battery documentation. Correct mismatched setup before escalating a persistent fault. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F58, BMS communication fault: Communication between the hybrid inverter and the battery BMS has been lost. The official manual flags it as a fault when the 'BMS_Err-Stop' protection is enabled and the BMS link drops (e.g. wrong comms cable, wrong battery protocol, or a loose RJ45). Safe checks now: Record the code and visible battery state in the app. Do not change BMS protocols, voltage limits or battery settings; contact the installer if the alarm does not clear. Installer remedy: Check battery status, configured parameters, voltage and BMS communication against the SG04LP3-AU manual and the exact battery documentation. Correct mismatched setup before escalating a persistent fault. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F62, DRM shutdown (DRMs0_stop): The inverter has stopped in response to a DRM (Demand Response Mode) command - specifically DRM0, the disconnect state. The official manual states the DRM function is for the Australia market only, so unlike most codes in this table it is squarely in scope for an Australian install. It indicates the unit is being commanded off, not failing. Safe checks now: Record the exact code, model and time. Do not change installer settings, repeatedly restart the inverter or open equipment; contact the installer if the event remains. Installer remedy: Use Chart 7-1 in the SUN-(5–12)K-SG04LP3-AU manual for the documented check. Preserve settings as found, use only the exact controlled recovery procedure and escalate a persistent event to Deye. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F63, ARC fault (AFCI): The arc-fault detection (AFCI) circuit has detected a possible DC arc on the PV side. The official manual notes this detection is enabled for the US market; many AU units will not raise it. Safe checks now: Record the alarm, time and weather conditions. Do not reset the inverter, touch PV cabling or open equipment; arrange a licensed inspection if the alarm persists or returns. Installer remedy: Follow the SG04LP3-AU fault-table checks for the PV earth, insulation or AFCI condition. Locate and rectify the source before returning the system to service; do not bypass a protection function. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. - F64, Heat-sink high temperature failure: The inverter's heat sink is too hot and it has shut down to protect itself (official manual: 'Heatsink high temperature failure - heatsink temperature is too high') - usually caused by a hot/poorly ventilated install location or blocked airflow. Safe checks now: Record the exact code, model and time. Do not change installer settings, repeatedly restart the inverter or open equipment; contact the installer if the event remains. Installer remedy: Use Chart 7-1 in the SUN-(5–12)K-SG04LP3-AU manual for the documented check. Preserve settings as found, use only the exact controlled recovery procedure and escalate a persistent event to Deye. Applicability: family-level; SUN-(5–12)K-SG04LP3-AU; exact model list not documented; Three-phase hybrid inverter; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Deye SUN-(5–12)K-SG04LP3-AU hybrid inverter user manual, Chart 7-1. The remedy is tied to the SG04LP3-AU fault table. Exact model and firmware remain unconfirmed; deployed F08 and F35 entries are excluded. --- ## Enphase (IQ-series microinverters): fault codes Source: https://wattbench.ai/enphase-microinverter-error-codes Enphase IQ-series microinverters report plain-language events through the IQ Gateway rather than one universal numeric table. Current official Enphase material supports the reviewed remedies for IQ8 DC Resistance Low, Microinverter Failed to Report and Gateway Not Reporting. The classic Envoy-era event vocabulary (grid, DC-input, temperature and GFI events) now resolves to Enphase's own still-published legacy gateway manuals — documents whose every page notes the product is no longer sold — and each of those remedies carries that caveat; the same event names still appear on current systems, but the cited descriptions are the legacy product's record of them. Two app-level labels (Microinverter Not Detected / Not Found, Device Produced No Power) appear in no recovered official document and deliberately stay remedy-blank. Australian product availability does not prove that every event label or firmware behaviour applies to every installed IQ family. Safety note: owners should stay off the roof and stop at app observations. Array, AC and DC work is for a licensed electrician and, where solar accreditation is required, an SAA-accredited person. - AC Voltage Out Of Range, Grid voltage too high or too low: The microinverter is measuring AC (grid) voltage outside the limits set by its grid profile, so it disconnects and stops exporting until the grid settles back within range. In Australia high readings are extremely common on long suburban streets at midday when lots of solar is exporting and pushing local voltage up. Safe checks now: No action is needed — the manual states this condition corrects itself once utility voltage returns within limits for several minutes, with the wait restarting if voltage strays again. Record how often it appears and contact the installer if it persists or recurs daily. Installer remedy: For persistent events the manual's escalation is to the installer or Enphase's troubleshooting guide. Beyond that, verify the measured supply against the configured grid profile and raise sustained out-of-range voltage with the network operator. The region-set reconnection delay is documented behaviour, not a fault. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - AC Frequency Out Of Range, Grid frequency too high or too low: The microinverter is measuring a grid frequency outside its safe operating band (nominal 50 Hz in Australia) and goes offline as required by grid-protection rules. It must stay off until the grid has been continuously within limits for a set period; if frequency strays again during that window, the timer restarts. Safe checks now: No action is needed — the manual describes these events as usually transient and self-correcting by the electricity network, with the microinverter staying offline until frequency has been in range continuously for a region-set period. Contact the installer if it persists. Installer remedy: For persistent events the manual's escalation is to the installer or Enphase's troubleshooting guide. Beyond that, verify the supply frequency and the configured profile, and raise a sustained network frequency issue through the network process. The restarting reconnection timer is documented behaviour. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Grid Gone, No grid / AC supply detected: The microinverter has disconnected from the grid/mains because it cannot detect a valid supply, so it shuts down. Enphase units are anti-islanding by design and will not produce power without a stable grid present. This appears during a blackout, or when an AC isolator, breaker or RCD on the solar circuit has been switched off. Safe checks now: In most cases no action is required — the manual attributes this to a power outage, with production resuming when supply returns. Check only whether the PV circuit breakers are visibly ON without operating them; contact the installer if events persist. Installer remedy: Verify the AC supply and breaker state. The manual notes persistent events can be a false positive where a microinverter incorrectly reports grid instability, which a microinverter software upgrade may resolve — follow that path before replacing hardware. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - DC Voltage Too Low, Not enough DC input from the panel: The microinverter reports that DC input voltage from its solar module is too low. The manual calls this usually normal during hours of low light and at dawn and dusk; if it does not clear during full daylight, the modules may be heavily shaded or covered by snow. Safe checks now: The manual calls this usually normal during low light and at dawn and dusk. If it does not clear during full daylight, the modules may be heavily shaded or snow-covered — note the pattern and contact the installer; do not go onto the roof. Installer remedy: For an event that occurs and clears daily in full daylight, the manual's check is module-to-microinverter compatibility. Verify the module's voltage output suits the microinverter before investigating further. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - DC Power Too Low, Panel producing too little power: Closely related to DC Voltage Too Low. The microinverter is measuring DC power below its operating threshold. Most often this is just low light (dawn, dusk, shade, cloud). If it occurs in full sun, it can point to a shaded, soiled or underperforming panel, or a degraded DC connection. Safe checks now: No action is needed — the manual attributes this to sunrise, sunset, snow cover or very bad weather, with production resuming once sunlight increases. Contact the installer if it persists in good daylight. Installer remedy: If the event persists during full daylight, inspect the affected module for shading or soiling and confirm the microinverter's reporting. Escalate through Enphase support if generation does not resume in normal conditions. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - DC Voltage Too High, Too much DC input from the panel: The microinverter reports that DC input voltage from the PV module is too high. The manual's recommended action is a module-to-microinverter compatibility check — the module may generate a higher voltage than is recommended for the microinverter. Safe checks now: Record which panel reports the event and leave the array and wiring alone. The manual's recommended action is an installer check, so contact yours; do not operate DC equipment or go onto the roof. Installer remedy: The manual's action for this event is checking that the PV module and microinverter are compatible — the module may generate a higher voltage than is recommended for the microinverter. If they are compatible and the condition persists, escalate through Enphase support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - GFI Tripped, Ground-fault current detected: Legacy hardware only: the cited manual states this condition occurs only with the M190, D380, M210, M200, M175 microinverters and one model of the M215 (M215-60-2LL-S22) — all pre-IQ. On current IQ8 hardware the same insulation-resistance protection is reported under a different name, DC Resistance Low – Power Off. The microinverter's built-in ground-fault (GFI) sensor has detected leakage current to earth during normal operation and has opened the circuit to protect against a fault. It can be triggered by moisture/weather, but a persistent trip points to damaged module insulation (such as cracked module glass), a damaged connector or cable, or water ingress. Safe checks now: This condition is documented for pre-IQ hardware only, shown by a solid red status LED. Record which unit reports it and stay off the roof; a repeating trip is an earth-fault symptom for a licensed electrician, not something to reset and forget. Installer remedy: The Envoy-S manual's procedure is sending the clear-gfi message through the Envoy after the cause is addressed — a persistent or recurring trip means inspecting module insulation, cabling and connectors first, and contacting Enphase support if it will not clear. On IQ8 hardware the equivalent condition is DC Resistance Low – Power Off. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - DC Resistance Low - Power Off, Insulation resistance to earth too low: An insulation-resistance (IR) sensor in the microinverter measures the resistance to earth from the positive and negative DC inputs. If it drops below the acceptable threshold (around 7 kΩ on IQ units), the unit stops producing and latches off. On IQ8 units this shows as a solid red status LED (after DC power has been cycled), and the gateway keeps reporting the fault until it is cleared. Common causes are moisture ingress, damaged cabling/connectors, or degraded module insulation. Safe checks now: Record the event, affected panel and weather conditions. Do not go onto the roof, reset the device or touch array wiring; contact the installer because the IQ8 remains power-off for this condition. Installer remedy: Use the IQ8 manual's DC-resistance troubleshooting path to inspect the affected module and DC connection under safe isolation. Rectify the insulation condition before clearing the event or returning the unit to service. Applicability: family-level; IQ8 Series; exact model list not documented; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Enphase IQ8 Series microinverter installation and operation manual, IOM-00068-3.0-EN, May 2026 (IOM-00068-3.0-EN). Only the IQ8 manual-backed condition resolves to this family. Exact models, Australian variant and firmware range are not confirmed. - Over Temperature / Critical Temperature, Microinverter running too hot: An internal temperature measurement inside the microinverter is above its normal range. To protect itself it automatically reduces (derates) its power output, and in extreme cases shuts down, until it cools; full power resumes once the temperature falls to an acceptable level. Note this is an internal reading, not ambient air temperature (IQ8 units run at full power up to about 50 °C ambient and derate above that). It can be driven by very high roof temperatures or restricted airflow behind the panel. Safe checks now: No action is needed — the manual describes both events as self-correcting: the microinverter derates or stops producing until its internal temperature returns to normal limits, then resumes full production. Contact the installer if it persists. Installer remedy: If the condition persists, the manual's path is Enphase customer support. Confirm the install conditions have not changed before escalating; the reading is the unit's internal sensor, not ambient temperature. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Microinverter Failed to Report, Gateway has lost contact with a microinverter: The IQ Gateway is no longer receiving data from one or more microinverters over the powerline communication (PLC) link, so the panel shows grey (not reporting). It can be caused by powerline-communication interference (e.g. a surge strip, noise source, or the gateway being plugged into a power board rather than a wall outlet), a tripped solar breaker/isolator, an AC wiring issue, or a failed unit. It does not necessarily mean the panel has stopped producing. Safe checks now: Check the affected panel's last-report time in the Enphase app and wait for a short-lived communication interruption to clear. If it remains beyond 24 hours, contact the installer; do not operate solar breakers. Installer remedy: Follow Enphase's microinverter-not-reporting workflow, separating power-line communication interference from AC, wiring or device faults. Document the result before replacement or warranty escalation. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Microinverter Not Detected / Not Found, New microinverter not discovered during commissioning: During or after installation the IQ Gateway / Enphase Installer App cannot find a microinverter to add it to the system. This is a commissioning-stage condition (the device shows as "not discovered") rather than a logged operational fault, and usually means the unit isn't yet powered, hasn't been given time to be discovered, or its serial wasn't scanned correctly. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Device Produced No Power, No energy generated in the last 24 hours: A microinverter that previously produced has generated no power within the last 24 hours. Causes range across the grid (a profile/voltage/frequency condition keeping it off), the AC side (a tripped breaker or isolator), or a failed unit. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Gateway / Envoy Not Reporting, IQ Gateway not sending data to Enphase: The IQ Gateway (Envoy) itself has stopped uploading data to the Enphase cloud, so the whole system appears offline in the app. This is almost always an internet/connectivity problem (router, Wi-Fi, or the gateway's own connection) rather than a solar production fault. Your panels may still be generating normally. Safe checks now: Confirm the home internet is working and follow the Gateway Not Reporting steps presented in the Enphase app. This monitoring fault does not by itself prove that solar production has stopped. Installer remedy: Confirm gateway power and its Wi-Fi or Ethernet path, then use the current Enphase gateway reconnection workflow. Escalate if the gateway remains offline after the documented connectivity checks. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. --- ## Sigenergy (SigenStor): fault codes Source: https://wattbench.ai/sigenergy-sigenstor-fault-codes Sigenergy's SigenStor combines PV, battery and energy-control functions, so its alarm list spans the full system. Codes appear in mySigen and SigenCloud as a four-digit alarm with a sub-ID that identifies the affected string, phase or communication link. This library includes only the 1000-series operational alarms verified in Sigenergy Alarm List v05. Safety note: owners should record the alarm and stop at safe visual observations or ordinary app support. DC/AC isolation, electrical measurements, settings, wiring and opening equipment are licensed-worker tasks completed under the exact product and site procedure. - 1002, Low insulation resistance (ISO fault): The inverter has measured low insulation resistance on the PV (DC) side, meaning the system is detecting a possible leakage path to earth. Common triggers are moisture ingress in a connector or cable, a damaged DC cable, or a string partially shorting to the protective earth (PE). It often appears in the early morning when humidity is highest and may self-clear as things dry out. Safe checks now: Record the alarm, sub-ID, time and weather conditions. Keep clear of PV wiring and do not operate isolators; contact your installer if the low-insulation alarm persists or repeats. Installer remedy: Under the approved safe-isolation procedure, check the identified DC cable for short circuit, damage and positive- or negative-to-earth faults. Verify the ISO threshold against local requirements and submit app feedback if the alarm remains. Applicability: family-level; SigenStor; exact model list not documented; Integrated energy-storage system; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Sigenergy Alarm List Version 05 (2025-10-24), official AU (Version 05). The Australian alarm list supports SigenStor family guidance and the official AU product surface describes SigenStor as an integrated energy-storage system. Exact model, installed regional variant and firmware applicability remain unconfirmed. - 1003, Inverter over-temperature: The inverter has exceeded its safe internal operating temperature and has throttled or shut down to protect itself. Usual causes are high ambient temperature, the unit sitting in direct sun, or restricted airflow/poor ventilation around the tower. Safe checks now: From a safe position, check that external ventilation is not visibly obstructed and note whether the unit is in direct sun. Allow it to cool; do not open the enclosure and contact your installer if it persists. Installer remedy: Check ventilation and direct-sun exposure against the installation requirements. The unit should restart after temperature returns to normal; submit app feedback if the alarm remains under compliant conditions. Applicability: family-level; SigenStor; exact model list not documented; Integrated energy-storage system; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Sigenergy Alarm List Version 05 (2025-10-24), official AU (Version 05). The Australian alarm list supports SigenStor family guidance and the official AU product surface describes SigenStor as an integrated energy-storage system. Exact model, installed regional variant and firmware applicability remain unconfirmed. - 1006, String input overvoltage (PV): The DC voltage from a PV string (the sub-ID identifies which string: e.g. ID1 = String 1) is above the inverter's maximum allowed input voltage. This almost always means too many panels were wired in series for that string, and the problem shows up worst on cold, bright mornings when panel voltage peaks. Safe checks now: Leave the SigenStor and PV wiring alone, record the alarm and string sub-ID, and contact your installer promptly. Do not reset the system or operate isolators to test whether it clears. Installer remedy: Under the approved safe-isolation procedure, measure the identified string voltage and compare it with the exact product limit and string design. Reduce the series module count if required before reconnection and submit app feedback if the alarm remains. Applicability: family-level; SigenStor; exact model list not documented; Integrated energy-storage system; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Sigenergy Alarm List Version 05 (2025-10-24), official AU (Version 05). The Australian alarm list supports SigenStor family guidance and the official AU product surface describes SigenStor as an integrated energy-storage system. Exact model, installed regional variant and firmware applicability remain unconfirmed. - 1009, AFCI fault (DC arc detected): The arc-fault circuit interrupter has detected what looks like an electrical arc on a PV string (the sub-ID flags which string). This is a genuine fire-safety feature. Arcs are usually caused by a damaged DC cable, a loose or corroded connector, or a poor contact at a string terminal. Safe checks now: Treat the arc alarm as urgent: record the string sub-ID, keep clear of the equipment and contact your installer. Do not clear the alarm, operate isolators or touch PV connectors or wiring. Installer remedy: Disconnect the PV DC supply under the approved safe-isolation procedure, then inspect the identified string's cables, connectors and terminations for damage, looseness or burning. Rectify the cause before clearing the alarm in the app; submit support feedback if it remains. Applicability: family-level; SigenStor; exact model list not documented; Integrated energy-storage system; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Sigenergy Alarm List Version 05 (2025-10-24), official AU (Version 05). The Australian alarm list supports SigenStor family guidance and the official AU product surface describes SigenStor as an integrated energy-storage system. Exact model, installed regional variant and firmware applicability remain unconfirmed. - 1010, Grid power outage / grid power failure lock: The inverter has detected that the grid has gone away, either an actual blackout or the AC isolator/main switch being turned off (ID1). A persistent or repeated loss can put the system into a grid-failure lock state (ID2). With backup configured, the system transfers to battery/backup; otherwise it stops exporting and waits. Safe checks now: Check whether the property and neighbourhood have grid supply, then record the alarm and sub-ID. The system should reconnect automatically; contact your installer if normal supply is present but the alarm remains locked. Installer remedy: Verify reliable grid supply, AC switch and circuit-breaker state, and whether off-grid operation is correctly enabled. Clear the ID2 lock in the app only after the site condition is confirmed safe; submit feedback if it remains. Applicability: family-level; SigenStor; exact model list not documented; Integrated energy-storage system; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Sigenergy Alarm List Version 05 (2025-10-24), official AU (Version 05). The Australian alarm list supports SigenStor family guidance and the official AU product surface describes SigenStor as an integrated energy-storage system. Exact model, installed regional variant and firmware applicability remain unconfirmed. - 1011, Grid overvoltage (Level I / II / III): The grid voltage at your connection point has risen above the allowed protection threshold, so the inverter disconnects to protect itself and comply with grid rules. Level I is mildest, Level III most severe. This is one of the most common alarms in Australia, especially around midday in areas with lots of rooftop solar pushing voltage up. Safe checks now: Record the alarm, sub-ID and time, then wait for automatic recovery when the grid returns to range. Contact your installer if the alarm persists or repeats; do not change protection settings. Installer remedy: Measure the actual grid voltage and compare it with the approved protection settings. Preserve the commissioned profile, contact the grid operator if supply is abnormal and change protection only with operator consent; submit app feedback if the alarm persists. Applicability: family-level; SigenStor; exact model list not documented; Integrated energy-storage system; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Sigenergy Alarm List Version 05 (2025-10-24), official AU (Version 05). The Australian alarm list supports SigenStor family guidance and the official AU product surface describes SigenStor as an integrated energy-storage system. Exact model, installed regional variant and firmware applicability remain unconfirmed. - 1012, Grid undervoltage (Level I / II / III): The grid voltage has dropped below the protection threshold, so the inverter disconnects until it recovers. It usually reflects a weak or sagging grid supply rather than an inverter fault, and is more common on long rural feeders or during high-demand periods. Safe checks now: Record the alarm, sub-ID and time, then wait for automatic recovery when the grid returns to range. Contact your installer if the alarm persists or repeats; do not change protection settings. Installer remedy: Measure the actual grid voltage and compare it with the approved protection settings. Preserve the commissioned profile, contact the grid operator if supply is abnormal and change protection only with operator consent; submit app feedback if the alarm persists. Applicability: family-level; SigenStor; exact model list not documented; Integrated energy-storage system; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Sigenergy Alarm List Version 05 (2025-10-24), official AU (Version 05). The Australian alarm list supports SigenStor family guidance and the official AU product surface describes SigenStor as an integrated energy-storage system. Exact model, installed regional variant and firmware applicability remain unconfirmed. - 1013, Grid overfrequency (Level I / II / III): The grid frequency has risen above the allowed threshold and the inverter has disconnected per grid protection rules. This is a grid-side condition, not an internal fault, and usually clears within seconds. Safe checks now: Record the alarm, sub-ID and time, then wait for automatic recovery when the grid returns to range. Contact your installer if the alarm persists or repeats; do not change protection settings. Installer remedy: Measure the actual grid frequency and compare it with the approved protection settings. Preserve the commissioned profile, contact the grid operator if supply is abnormal and submit app feedback if the alarm persists. Applicability: family-level; SigenStor; exact model list not documented; Integrated energy-storage system; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Sigenergy Alarm List Version 05 (2025-10-24), official AU (Version 05). The Australian alarm list supports SigenStor family guidance and the official AU product surface describes SigenStor as an integrated energy-storage system. Exact model, installed regional variant and firmware applicability remain unconfirmed. - 1014, Grid underfrequency (Level I / II / III): The grid frequency has fallen below the allowed threshold and the inverter has disconnected to comply with grid protection requirements. Like overfrequency, it is a grid-side event that normally clears within seconds. Safe checks now: Record the alarm, sub-ID and time, then wait for automatic recovery when the grid returns to range. Contact your installer if the alarm persists or repeats; do not change protection settings. Installer remedy: Measure the actual grid frequency and compare it with the approved protection settings. Preserve the commissioned profile, contact the grid operator if supply is abnormal and submit app feedback if the alarm persists. Applicability: family-level; SigenStor; exact model list not documented; Integrated energy-storage system; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Sigenergy Alarm List Version 05 (2025-10-24), official AU (Version 05). The Australian alarm list supports SigenStor family guidance and the official AU product surface describes SigenStor as an integrated energy-storage system. Exact model, installed regional variant and firmware applicability remain unconfirmed. - 1017, Leak current out of limit: The inverter has measured residual/leakage current above its safety threshold. It is often transient, caused by damp conditions or a momentary disturbance, and the system typically recovers once the environment settles. Safe checks now: Record the alarm, sub-ID, time and conditions, then allow the system's automatic recovery. Do not reset or open the unit; contact your installer if the alarm is frequent or prolonged. Installer remedy: Preserve the alarm history and conditions and allow the documented automatic recovery. For a frequent or prolonged leakage-current alarm, submit support feedback and follow only the resulting manufacturer-directed diagnostic path. Applicability: family-level; SigenStor; exact model list not documented; Integrated energy-storage system; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Sigenergy Alarm List Version 05 (2025-10-24), official AU (Version 05). The Australian alarm list supports SigenStor family guidance and the official AU product surface describes SigenStor as an integrated energy-storage system. Exact model, installed regional variant and firmware applicability remain unconfirmed. - 1018, Communication fault (4G / CAN / meter / gateway): A communication link inside the system has dropped: for example the 4G/monitoring module (ID1), the battery CAN bus (ID2), the energy meter (ID3), or the gateway (ID4). The sub-ID identifies which link. Monitoring or energy-management features may stop working while it is active even if power flow continues. Safe checks now: Record the alarm and sub-ID shown in mySigen, because it identifies the affected 4G, CAN, meter or gateway link. Do not open the enclosure; use app support if the alarm persists. Installer remedy: Match the sub-ID to the affected link: check 4G service and dongle status, use the documented controlled restart for CAN, or inspect the specified meter or gateway communication port. Submit app feedback if communication does not recover. Applicability: family-level; SigenStor; exact model list not documented; Integrated energy-storage system; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Sigenergy Alarm List Version 05 (2025-10-24), official AU (Version 05). The Australian alarm list supports SigenStor family guidance and the official AU product surface describes SigenStor as an integrated energy-storage system. Exact model, installed regional variant and firmware applicability remain unconfirmed. - 1022, EPO / emergency stop activated: The emergency power-off (EPO) input has been triggered, typically because someone pressed the emergency-stop button (or, on some installs, a shutdown command in the mySigen app). The system stays shut down for safety until the EPO is released. Safe checks now: If emergency stop was activated for a hazard, leave the system stopped and keep people clear. After a competent person confirms the site is safe, follow the exact installed emergency-stop control instructions or contact your installer. Installer remedy: Establish why EPO was activated and confirm the site is safe before restoration. Reset only through the documented installed emergency-stop or app control, then submit app feedback if the alarm does not clear. Applicability: family-level; SigenStor; exact model list not documented; Integrated energy-storage system; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Sigenergy Alarm List Version 05 (2025-10-24), official AU (Version 05). The Australian alarm list supports SigenStor family guidance and the official AU product surface describes SigenStor as an integrated energy-storage system. Exact model, installed regional variant and firmware applicability remain unconfirmed. - 1023, Neutral disconnected / abnormal AC wiring: The inverter has detected a problem with the AC wiring, most commonly a neutral conductor that is disconnected or has worked loose inside the inverter (ID1), or otherwise abnormal AC wiring (ID2). A poor neutral connection can be a safety hazard. Safe checks now: Do not reset the system, operate electrical switches or touch AC wiring. Record the alarm and sub-ID and arrange attendance by your installer or a licensed electrician. Installer remedy: Place the system in standby or shutdown through the documented app procedure, isolate the grid supply and inspect the neutral connection under safe isolation. Rectify the loose or disconnected neutral, then restore and start the system through the manufacturer sequence. Applicability: family-level; SigenStor; exact model list not documented; Integrated energy-storage system; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Sigenergy Alarm List Version 05 (2025-10-24), official AU (Version 05). The Australian alarm list supports SigenStor family guidance and the official AU product surface describes SigenStor as an integrated energy-storage system. Exact model, installed regional variant and firmware applicability remain unconfirmed. --- ## Tesla (Powerwall 2 / Powerwall 3 home battery): fault codes Source: https://wattbench.ai/tesla-powerwall-alert-codes Tesla's Powerwall doesn't use short numeric fault codes the way many inverters do. Instead, the Tesla app shows plain-language alerts and status notifications. This library covers documented Powerwall 2 and Powerwall 3 owner alerts, plus one separately labelled Tesla Solar Inverter / Powerwall+ arc-fault lockout. It is reference material, not a repair manual. Safety note: owners should stop at app guidance, ordinary load reduction and safe observation. Do not troubleshoot during an outage, extreme weather or where there is heat damage. Breakers that will not remain closed, rapid-shutdown circuits, AC/DC isolation, wiring and opening equipment are licensed-worker or Tesla-authorised service tasks. - Breaker Open, Powerwall breaker is open / off: The AC circuit breaker that connects your Powerwall to your home is in the open (off) position, so the Powerwall is disconnected and can't charge or store energy. Left like this, the battery can slowly drain its reserve and may eventually need a service visit. Safe checks now: Record the alert and use Tesla's in-app troubleshooting only when conditions are safe. Do not troubleshoot during an outage, extreme weather or if there is heat damage; if the breaker will not stay closed, contact your installer or Tesla. Installer remedy: Follow Tesla's guided breaker-open troubleshooting for the exact installed configuration. If the breaker trips again or any heat damage is present, stop resetting and inspect the system under the authorised service procedure. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Powerwall Overloaded, Powerwall is overloaded: reduce load: During a grid outage your home is drawing more power than the Powerwall can supply at once (for example several high-draw appliances running together), so Powerwall has stopped supplying power to protect itself. Safe checks now: Reduce high-power household loads and wait for Powerwall's automatic retry. If it repeatedly overloads with only essential loads running, record the alert and contact your installer. Installer remedy: Confirm the loads present at each overload and compare them with the commissioned backup configuration. If overloads recur under the expected load, follow Tesla's system troubleshooting path rather than repeatedly restarting it. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Powerwall Inactive, Powerwall has stopped powering the home (inactive): Powerwall has entered an inactive state, commonly after running very low on energy during an outage or after repeated overloads, and is no longer supplying your home. Tesla notes that when low, if the remaining energy decreases by more than about 2.5% it becomes inactive and waits for the next hour to try charging again. Safe checks now: Reduce household load and, when daylight or grid power is available, follow the Tesla app's Powerwall Inactive prompt. Do not restart during unsafe weather or if equipment shows heat damage; contact Tesla support if it remains inactive. Installer remedy: Review the outage and energy history, then use Tesla's documented app recovery path when charging energy is available. If the system does not recover, follow the exact Gateway or Backup Switch troubleshooting procedure and escalate to Tesla. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Powerwall Low on Energy, Powerwall is low on energy: Battery charge is getting low (typically during a grid outage). Backup time is limited and will run out sooner if your usage stays high. Safe checks now: Reduce non-essential and high-power household loads to extend backup time. No electrical work is required; Powerwall will continue managing the remaining energy while the grid is unavailable. Installer remedy: Confirm this is a low-energy outage notification rather than a hardware fault. Help the owner reduce backup loads and review reserve or backup expectations after service is restored if the event exposed a commissioning issue. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Powerwall Energy Very Low, Powerwall energy very low: limited backup remaining: The battery is nearly empty during an outage and may fully discharge if usage isn't cut back. Tesla's wording is along the lines of 'Powerwall energy is very low, and you will have limited backup time remaining.' Once it gets too low it stops providing power to protect the cells. Safe checks now: Immediately reduce use to essential loads and allow Powerwall to preserve its remaining energy. Wait for grid return or sufficient solar recharge; do not operate electrical equipment to force a restart. Installer remedy: Confirm the state follows an outage and depleted energy, then review the backup-load history. If Powerwall does not resume after grid return or adequate solar, continue with Tesla's documented troubleshooting path. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Powerwall Stopped (Discharged), Powerwall too low and stopped powering the home: The battery dropped to its minimum and has stopped supplying power to protect the cells. Tesla documents that if an outage occurs while stored energy is below about 5% you immediately lose backup and Powerwall saves the remaining energy to recharge from solar the next morning; separately, once a Powerwall drops below roughly 10% during an outage it enters standby and stops providing power. Either way this is normal protective behaviour, not a fault. Safe checks now: Keep household loads to a minimum and wait for grid return or sufficient daytime solar recharge. This is a protective low-energy state; contact Tesla support if Powerwall does not resume when charging energy is available. Installer remedy: Confirm the system stopped after depleted backup energy and review the outage history. If normal grid or sufficient solar is available but recovery does not occur, follow Tesla's documented restart and support path for the installed Gateway or Backup Switch. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Rapid Shutdown (RSD) Initiated, Rapid shutdown triggered: Powerwall won't power home: The rapid-shutdown safety circuit has been triggered, so Powerwall will not power your home. Tesla's alert typically reads 'Rapid Shutdown Initiated. Check AC breaker and low-voltage rapid shutdown circuit.' This is a safety function tied to the AC breaker and the low-voltage RSD wiring, not a simple consumer button you reset. Safe checks now: Leave the system in its safe state, record the alert and contact your installer or Tesla. Do not bypass, reset or alter the rapid-shutdown circuit or its wiring. Installer remedy: Identify whether the installed system follows the Powerwall+ / Tesla Solar Inverter or Powerwall 3 rapid-shutdown design, then inspect and restore only through that exact Tesla procedure. Never bypass the safety circuit. Applicability: family-level; Powerwall+ / Tesla Solar Inverter; exact model list not documented; Role not confirmed; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Powerwall+ / Tesla Solar Inverter Rapid Shutdown (RSD) Initiated, Tesla Energy Library. The en-AU rapid-shutdown procedure covers Powerwall+ and Tesla Solar Inverter but does not publish a nameplate-exact model, one shared product role or firmware range. | family-level; Powerwall 3; exact model list not documented; Integrated solar-and-battery system; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Powerwall 3 Rapid Shutdown (RSD) Initiated, Tesla Energy Library. The en-AU procedure and Tesla Australia product surface identify Powerwall 3 as an integrated solar-and-battery system. Exact hardware designation and firmware applicability remain unconfirmed. - Internal Fault: Replacement Required, Powerwall disabled by an internal fault: Powerwall has been disabled because of an internal hardware fault, and you may see a flashing red logo LED on the unit with an app alert such as 'Powerwall Disabled' or 'Internal Fault Detected'. Powerwall and its components are not user-serviceable. A persistent internal fault means the unit needs professional support or replacement. Safe checks now: Record the alert and any LED state, keep clear of the equipment and contact your installer or Tesla. Do not open or attempt to repair a Powerwall; if there is heat damage, do not troubleshoot it. Installer remedy: Use Tesla's guided troubleshooting to confirm the disabled state and collect the system details required for support. A persistent internal fault requires Tesla-authorised service; do not attempt an internal repair. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Arc Fault Lockout, Tesla Solar Inverter / Powerwall+ arc-fault lockout: On Tesla Solar Inverter and Powerwall+ systems, five arc-fault alerts within 24 hours trigger an arc-fault lockout. Tesla requires the PV string wiring, junction boxes, DC connectors and module-level equipment to be inspected before re-enabling the system. Safe checks now: Leave the Tesla Solar Inverter or Powerwall+ system locked out and contact your installer or Tesla. Do not clear the lockout, touch PV wiring or attempt to find the arc yourself. Installer remedy: For Tesla Solar Inverter or Powerwall+ only, complete Tesla's arc-fault lockout inspection of string wiring, junction boxes, DC connectors and module-level equipment under safe shutdown and lockout/tagout, then submit the required Tesla One troubleshooting record before re-enabling. Applicability: family-level; Tesla Solar Inverter / Powerwall+; exact model list not documented; Role not confirmed; documentation region Australia; Australian/regional variant not confirmed; firmware not documented; manual Tesla Solar Inverter / Powerwall+ Arc Fault Lockout, Tesla Energy Library. The en-AU arc-fault procedure covers Tesla Solar Inverter and Powerwall+ but does not publish a nameplate-exact model, one shared product role or firmware range. - Going Off-Grid / Grid Outage, Grid is down: running on backup: Status notification (not a fault): the grid has gone down (or you initiated Go Off-Grid) and your home is now running on Powerwall backup. Tesla sends this so you can manage your energy use during the outage. Note that if your internet is also down during an outage, this notification may not arrive. Safe checks now: No fault action is required. Prioritise essential loads while the home is on backup and allow the system to reconnect automatically when grid supply returns. Installer remedy: Confirm this is the expected off-grid status and that the commissioned backup loads are operating as intended. If transfer or reconnection does not complete, follow Tesla's exact installed-system troubleshooting path. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - Storm Watch Activated, Storm Watch is active: charging to full: Status notification (not a fault): Tesla's Storm Watch detected a severe-weather forecast in your area (via national weather services) that could cause an outage, so Powerwall is charging to maximum capacity to give you the most backup protection. It stays in Storm Watch until the weather event passes. Safe checks now: No fault action is required. Storm Watch is preparing the battery for forecast severe weather; leave the system charging and manage heavy loads if you want to preserve maximum backup energy. Installer remedy: Confirm Storm Watch is the active status rather than a fault. No service action is required unless the system fails to charge or another alert appears; then diagnose that separate condition through Tesla support. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. --- ## FoxESS (H1/AC1 hybrid inverters and R-series three-phase string inverters): fault codes Source: https://wattbench.ai/foxess-inverter-error-codes FoxESS uses two distinct fault-naming conventions across its range. The hybrid inverters (H1/AC1, including the G2 generation) report named text alarms such as `Grid Lost Fault`, `Bat Volt Fault` and `BMS Lost`, shown on the inverter panel or in FoxCloud. The R-series three-phase string inverters (R75/R100/R110) use numeric fault codes in the 1030–1345 range. Every code below is taken verbatim from FoxESS's own user manuals (the H1(G2)/AC1(G2) Manual V1.0.8 and the R-Series User Manual), with the legacy numeric grid codes (1, 26, 27, 28) corroborated against the FoxESS owners' community forum. Always confirm the exact wording on your own unit's display or in FoxCloud, as alarm sets vary by model and firmware. - Grid Lost Fault, Grid Lost Fault: The grid supply has been lost / disconnected, so the inverter has isolated from the grid. Often appears alongside grid voltage/frequency faults, frequently caused by a tripped breaker. Safe checks now: Record when the alarm occurs and whether the property has normal grid supply. The inverter should reconnect when the grid returns to range; contact your installer if it persists or repeats. Installer remedy: Verify the grid supply and approved protection settings under the model procedure. Measure the relevant phases and escalate a confirmed supply abnormality through the authorised network process. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Grid Volt Fault, Grid Voltage Fault: Measured grid voltage is outside the allowed operating range (over- or under-voltage). Safe checks now: Record when the alarm occurs and whether the property has normal grid supply. The inverter should reconnect when the grid returns to range; contact your installer if it persists or repeats. Installer remedy: Verify the grid supply and approved protection settings under the model procedure. Measure the relevant phases and escalate a confirmed supply abnormality through the authorised network process. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Grid Freq Fault, Grid Frequency Fault: Grid frequency is outside the allowed operating range. Safe checks now: Record when the alarm occurs and whether the property has normal grid supply. The inverter should reconnect when the grid returns to range; contact your installer if it persists or repeats. Installer remedy: Verify the grid supply and approved protection settings under the model procedure. Measure the relevant phases and escalate a confirmed supply abnormality through the authorised network process. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - 10min Volt Fault, 10-Minute Average Grid Voltage Fault: The 10-minute average grid voltage has been out of range, a regulatory over-voltage protection. Safe checks now: Record when the alarm occurs and whether the property has normal grid supply. The inverter should reconnect when the grid returns to range; contact your installer if it persists or repeats. Installer remedy: Verify the grid supply and approved protection settings under the model procedure. Measure the relevant phases and escalate a confirmed supply abnormality through the authorised network process. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Bat Volt Fault, Battery Voltage Fault: Battery voltage is outside the inverter's normal operating range. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Check battery input voltage against the exact inverter and battery operating limits, then follow the battery supplier and FoxESS service path if it remains out of range. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Pv Volt Fault, PV Voltage Fault: PV (solar) input voltage is outside the allowed range. Safe checks now: Leave the inverter and PV wiring alone, record the alarm and contact your installer. Do not reset the inverter or operate isolators to test whether it clears. Installer remedy: Measure the PV input under the approved procedure and compare it with the exact model limits and temperature-corrected string design. Correct the input condition before reconnection. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Iso Fault, Isolation (Insulation) Fault: Isolation/insulation resistance to ground has failed, typically from damaged cable insulation or moisture. Safe checks now: Record the alarm, time and weather conditions. Do not reset the inverter, touch cables or operate isolators; arrange a licensed inspection if it persists or returns. Installer remedy: Test the affected AC/DC insulation and earthing under the approved safe-isolation procedure. Locate damaged wiring, moisture ingress or an abnormal earth path before returning the system to service. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Res Cur Fault, Residual Current Fault: Detected residual (leakage) current is too high, often from damaged insulation. Safe checks now: Record the alarm, time and weather conditions. Do not reset the inverter, touch cables or operate isolators; arrange a licensed inspection if it persists or returns. Installer remedy: Test the affected AC/DC insulation and earthing under the approved safe-isolation procedure. Locate damaged wiring, moisture ingress or an abnormal earth path before returning the system to service. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - DCI Fault, DCI (DC Injection) Fault: The DC component in the AC output current exceeds the permitted limit. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Follow the model-specific controlled disconnection and reconnection sequence once. If the fault returns, preserve the alarm record and escalate to FoxESS rather than repeatedly resetting it. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - SW Inv Cur Fault, Software Inverter Current Fault: Output current detected as too high by the software protection. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Follow the model-specific controlled disconnection and reconnection sequence once. If the fault returns, preserve the alarm record and escalate to FoxESS rather than repeatedly resetting it. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - HW Inv Cur Fault, Hardware Inverter Current Fault: Output current detected as too high by the hardware protection. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Follow the model-specific controlled disconnection and reconnection sequence once. If the fault returns, preserve the alarm record and escalate to FoxESS rather than repeatedly resetting it. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Temp Fault, Over-Temperature Fault: The inverter internal/ambient temperature is too high. Safe checks now: From a safe position, keep the area around the inverter clear and note whether it is in direct sun or unusually hot. Do not open the unit; contact your installer if it does not recover after cooling. Installer remedy: Check ambient conditions, clearances and ventilation against the installation manual. If conditions are compliant and the alarm remains, follow the FoxESS service path. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Ground Fault, Ground Connection Fault: The ground (PE) connection has failed. Safe checks now: Do not reset the inverter or touch electrical equipment. Record the alarm and arrange a licensed electrician or your installer to attend. Installer remedy: Check neutral-to-earth voltage, protective-earth continuity and AC wiring under the approved safe-isolation procedure, then follow the model restart sequence only after the fault is rectified. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Over Load Fault, Overload Fault (On-Grid): The connected load exceeds the inverter's limit while in on-grid mode. Safe checks now: Switch off non-essential plug-in appliances and record which loads were operating when the alarm appeared. Contact your installer if the alarm remains under ordinary load. Installer remedy: Compare the connected on-grid load with the model limit and investigate the load condition before following the product recovery procedure. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Eps Over Load, EPS Overload (Off-Grid): The connected backup/EPS load exceeds the inverter's limit while in off-grid mode. Safe checks now: Switch off non-essential plug-in appliances on the backup circuits and record which loads were operating. Contact your installer if backup does not recover. Installer remedy: Compare the EPS load and starting demand with the commissioned backup limits, correct the load condition and verify recovery under the product procedure. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Bat Power Low, Battery Power Low: The battery state of charge / available power is low. Safe checks now: Allow the battery time to recharge and avoid adding unnecessary backup loads. Contact your installer if the warning remains after charging conditions return. Installer remedy: Confirm battery availability, state of charge and the commissioned operating settings. Follow the battery supplier and FoxESS path if the battery does not recover. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - PvCon Dir Fault, PV Connection Reversed: The PV string polarity is connected the wrong way round. Safe checks now: Do not touch PV cables or connectors. Record the alarm and contact your installer before the system is operated again. Installer remedy: Under approved safe isolation, verify and correct the affected PV input polarity before reconnection. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - BatCon Dir Fault, Battery Connection Reversed: The battery polarity is connected the wrong way round. Safe checks now: Do not touch battery cables or connectors. Record the alarm and contact your installer before the system is operated again. Installer remedy: Under the battery and inverter safe-isolation procedures, verify and correct the battery polarity before reconnection. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Meter Lost Fault, Meter Communication Lost: Communication between the energy meter and the inverter has been interrupted. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Verify the meter-to-inverter communication cable, termination and configured meter path under the installation manual. Restore the connection before testing export-control operation. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - BMS Lost, BMS Communication Lost: Communication between the battery BMS and the inverter has been interrupted. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Verify the battery BMS communication cable, protocol and connection under the exact battery/inverter instructions. Escalate if communications do not recover. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Bms Int Fault, BMS Internal Fault: DIP switch in the wrong position, or communication between battery packs is interrupted. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Check the documented battery DIP-switch positions and inter-pack communication cables against the exact battery configuration, then follow the battery supplier path if the fault remains. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Bms Volt High, Battery Over-Voltage (BMS): The battery BMS reports an over-voltage condition. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Preserve the BMS alarm data and follow the battery supplier's authorised diagnostic process; do not bypass the BMS or alter protection limits. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Bms Volt Low, Battery Under-Voltage (BMS): The battery BMS reports an under-voltage condition. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Preserve the BMS alarm data and follow the battery supplier's authorised diagnostic process; do not bypass the BMS or alter protection limits. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Bms ChgCur High, Battery Charge Over-Current (BMS): The battery BMS reports a charge over-current. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Preserve the BMS alarm data and follow the battery supplier's authorised diagnostic process; do not bypass the BMS or alter current limits. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Bms DchgCur High, Battery Discharge Over-Current (BMS): The battery BMS reports a discharge over-current. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Preserve the BMS alarm data and follow the battery supplier's authorised diagnostic process; do not bypass the BMS or alter current limits. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Bms Temp High, Battery Over-Temperature (BMS): The battery BMS reports an over-temperature condition. Safe checks now: Keep clear of the battery, record the alarm and contact your installer or battery supplier promptly. Do not open equipment, operate isolators or attempt a reset. Installer remedy: Preserve the BMS alarm and temperature context, keep the battery out of service under the authorised procedure, and follow the battery supplier's diagnostic path. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - Bms Temp Low, Battery Under-Temperature (BMS): The battery BMS reports an under-temperature condition. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Preserve the BMS alarm and temperature context and follow the battery supplier's diagnostic path before attempting charge or discharge outside the approved range. Applicability: confirmed; H1(G2) Series; documented exact models H1-3.0-E-G2, H1-3.7-E-G2, H1-4.6-E-G2, H1-5.0-E-G2, H1-6.0-E-G2, H1-4.6-E1-G2, H1-5.0-E1-G2; Single-phase hybrid inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven H1(G2) single-phase hybrid inverter models. Australian variant and firmware applicability remain unconfirmed. | confirmed; AC1(G2) Series; documented exact models AC1-3.0-E-G2, AC1-3.7-E-G2, AC1-4.6-E-G2, AC1-5.0-E-G2, AC1-6.0-E-G2, AC1-4.6-E1-G2, AC1-5.0-E1-G2; AC-coupled inverter; documentation region unknown; Australian/regional variant not confirmed; firmware not documented; manual FoxESS H1(G2)/AC1(G2) Series User Manual V1.0.8 (official) (V1.0.8). The manual names seven AC1(G2) AC-coupled inverter models. Australian variant and firmware applicability remain unconfirmed. - 1030, AC Overcurrent: The AC output current has exceeded the safe limit (R-series three-phase string inverter). Safe checks now: Allow the inverter to attempt its documented automatic recovery and record whether the alarm repeats. Contact your installer if it recurs. Installer remedy: Confirm the AC output condition and follow the FoxESS service path for a recurring overcurrent; the manual does not prescribe an owner reset. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1034, DC Component Current Fault: A DC component has been detected in the output current beyond limits. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Follow the model-specific controlled disconnection and reconnection sequence once. If the fault returns, preserve the alarm record and escalate to FoxESS rather than repeatedly resetting it. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1035, Leakage Overcurrent Fault: Excessive leakage (residual) current, often caused by high parasitic capacitance in poor light or moist conditions. Safe checks now: Record the alarm, time and weather conditions. Do not reset the inverter, touch cables or operate isolators; arrange a licensed inspection if it persists or returns. Installer remedy: Test the affected AC/DC insulation and earthing under the approved safe-isolation procedure. Locate damaged wiring, moisture ingress or an abnormal earth path before returning the system to service. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1040, Grid Voltage Imbalance: Imbalance between the grid phase voltages (three-phase R-series). Safe checks now: Record when the alarm occurs and whether the property has normal grid supply. The inverter should reconnect when the grid returns to range; contact your installer if it persists or repeats. Installer remedy: Verify the grid supply and approved protection settings under the model procedure. Measure the relevant phases and escalate a confirmed supply abnormality through the authorised network process. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1042, Grid High Frequency: Grid frequency above the permitted limit (R-series 'Grid High Freq'). Safe checks now: Record when the alarm occurs and whether the property has normal grid supply. The inverter should reconnect when the grid returns to range; contact your installer if it persists or repeats. Installer remedy: Verify the grid supply and approved protection settings under the model procedure. Measure the relevant phases and escalate a confirmed supply abnormality through the authorised network process. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1043, Grid Low Frequency: Grid frequency below the permitted limit (R-series 'Grid Low Freq'). Safe checks now: Record when the alarm occurs and whether the property has normal grid supply. The inverter should reconnect when the grid returns to range; contact your installer if it persists or repeats. Installer remedy: Verify the grid supply and approved protection settings under the model procedure. Measure the relevant phases and escalate a confirmed supply abnormality through the authorised network process. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1044, Grid Phase Voltage Over-Limit: A grid phase voltage has exceeded its limit (R-series 'Grid Phase Volt Over-limit'). Safe checks now: Record when the alarm occurs and whether the property has normal grid supply. The inverter should reconnect when the grid returns to range; contact your installer if it persists or repeats. Installer remedy: Verify the grid supply and approved protection settings under the model procedure. Measure the relevant phases and escalate a confirmed supply abnormality through the authorised network process. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1045, Grid Line Voltage Over-Limit: A grid line (phase-to-phase) voltage has exceeded its limit (R-series 'Grid Line Volt Over-limit'). Safe checks now: Record when the alarm occurs and whether the property has normal grid supply. The inverter should reconnect when the grid returns to range; contact your installer if it persists or repeats. Installer remedy: Verify the grid supply and approved protection settings under the model procedure. Measure the relevant phases and escalate a confirmed supply abnormality through the authorised network process. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1051, Grid Phase Lost Fault: A grid phase has been lost on the three-phase supply. Safe checks now: Record when the alarm occurs and whether the property has normal grid supply. The inverter should reconnect when the grid returns to range; contact your installer if it persists or repeats. Installer remedy: Verify the grid supply and approved protection settings under the model procedure. Measure the relevant phases and escalate a confirmed supply abnormality through the authorised network process. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1066, DC Input MPPT1 Reverse Fault: The PV string on MPPT1 has reversed polarity. Safe checks now: Do not touch PV cables or connectors. Record the code and contact the responsible installer before the system is operated again. Installer remedy: Under approved safe isolation and the product procedure, verify the affected MPPT polarity and correct it only under the conditions specified by FoxESS. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1099, Over-Temperature Protection: The inverter has triggered over-temperature protection. Safe checks now: From a safe position, note direct sun and any visible obstruction at the air outlet. Do not touch the fan or open the inverter; contact your installer if it does not recover after cooling. Installer remedy: Check installation shading, cooling airflow and fan alarms under the maintenance procedure. Clear the outlet safely or arrange service if the alarm persists. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1116, Ground Impedance Fault: Abnormal ground (earth) impedance detected. Safe checks now: Do not reset the inverter or touch electrical equipment. Record the code and arrange a licensed inspection. Installer remedy: Check protective-earth connections and insulation between earth and live conductors under the approved safe-isolation procedure before returning the inverter to service. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1123, Grid Relay Fault: Fault in the grid relay. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Follow the model-specific controlled disconnection and reconnection sequence once. If the fault returns, preserve the alarm record and escalate to FoxESS rather than repeatedly resetting it. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1124, Insulation Resistance Low Fault: PV array insulation (ISO) resistance to ground is too low. Safe checks now: Record the alarm, time and weather conditions. Do not reset the inverter, touch cables or operate isolators; arrange a licensed inspection if it persists or returns. Installer remedy: Verify the configured ISO protection value against local requirements, then inspect DC cable condition and earth contact under approved safe isolation. Recheck weather-related events only after conditions improve. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1145, Arc Fault: An arc fault has been detected on the DC side (AFCI protection). Safe checks now: Treat this as a safety alarm. Do not clear it in the app, reset the inverter or touch PV wiring; keep clear and contact the responsible installer promptly. Installer remedy: Disconnect the DC input under the authorised procedure and inspect the affected circuit for damaged cables, loose terminals or fuses, and burn marks. Clear the alarm only after the cause is rectified. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1188, AC SPD Abnormality: The AC surge protection device (SPD) is abnormal. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Inspect the AC surge-protection device status under safe isolation and replace or service it through the authorised process before relying on the protection path. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1189, DC SPD Abnormality: The DC surge protection device (SPD) is abnormal. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Inspect the DC surge-protection device status under safe isolation and replace or service it through the authorised process before relying on the protection path. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1191, External Fan Alarm: The external cooling fan has alarmed, e.g. blocked by debris. Safe checks now: From a safe position, look for a visible obstruction around the external fan. Do not touch the fan or open the inverter; contact your installer. Installer remedy: Under the maintenance and safe-isolation procedure, remove external fan obstructions and verify fan operation. Escalate a continuing alarm to FoxESS. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1193, EEPROM Read-Write Alarm: Internal communication / EEPROM read-write abnormality. Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Follow the model-specific controlled disconnection and reconnection sequence once. If the fault returns, preserve the alarm record and escalate to FoxESS rather than repeatedly resetting it. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1313, DC Input MPPT1 Voltage High Fault: The DC input voltage on MPPT1 is too high. Safe checks now: Leave the inverter and PV wiring alone, record the code and contact your installer. Do not reset the inverter or operate isolators to test whether it clears. Installer remedy: Measure the affected MPPT input under the approved procedure and compare it with the exact inverter limit and temperature-corrected string design before reconnection. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. - 1345, String1 Warning: A warning for PV String 1 (e.g. unreliable connection or a damaged DC fuse). Safe checks now: Record the exact alarm, inverter model and time. Do not operate isolators, open equipment or change installer settings; contact your installer if the alarm remains. Installer remedy: Verify the affected MPPT connection and DC fuse under approved safe isolation. Replace a damaged fuse with the specified part and escalate if the warning remains. Applicability: confirmed; R75 / R100 / R110; documented exact models R75, R100, R110; Three-phase string inverter; documentation region Europe; Australian/regional variant not confirmed; firmware not documented; manual FoxESS R-Series (R75/R100/R110) User Manual V1.4 (official) (V1.4). The manual names R75, R100 and R110 as three-phase grid-tied string inverters. Australian variant and firmware applicability remain unconfirmed. --- ## Sofar Solar (Shenzhen SOFARSOLAR): legacy ME3000SP retrofit inverter: fault codes Source: https://wattbench.ai/sofar-inverter-error-codes This library is now anchored to the official ME3000SP manual. Sofar products reuse ID-style alarms, but numbering and meaning can shift between ME3000SP, HYD ES/EP and later string or storage families. Do not transfer an ME3000SP remedy to another family without its exact manual; those applicability fields remain deliberately blank. This manual's Event List runs ID96 straight to ID98 — an earlier version of this library listed an ID97 "InValidCountry" alarm that this manual does not contain, and it has been removed; the manual does mention resetting the country code, but only as a troubleshooting step under ID01, not as its own alarm ID. Safety note: owners should stop at recording the code, app status and safely visible conditions. DC/AC isolation, electrical measurements, opening equipment, firmware work and protection-setting changes are licensed-worker tasks. Any shutdown or restart must follow the procedure for the exact model and site; do not use this library as a switching sequence. - ID01, GridOVP: The grid (mains) voltage measured by the inverter is too high, above the safe range the inverter is set to operate within. Safe checks now: Record the code, time and whether the premises supply appears normal. Do not change grid settings; contact the installer if the event persists or repeats. Installer remedy: Check the grid condition and AC circuit against the ME3000SP manual. Protection points may be changed only after approval from the local network operator; escalate to SOFAR if the event repeats. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID02, GridUVP: The grid (mains) voltage measured by the inverter is too low. Safe checks now: Record the code, time and whether the premises supply appears normal. Do not change grid settings; contact the installer if the event persists or repeats. Installer remedy: Check the grid condition and AC circuit against the ME3000SP manual. Protection points may be changed only after approval from the local network operator; escalate to SOFAR if the event repeats. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID03, GridOFP: The grid (mains) frequency measured by the inverter is too high. Safe checks now: Record the code, time and whether the premises supply appears normal. Do not change grid settings; contact the installer if the event persists or repeats. Installer remedy: Check the grid condition and AC circuit against the ME3000SP manual. Protection points may be changed only after approval from the local network operator; escalate to SOFAR if the event repeats. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID04, GridUFP: The grid (mains) frequency measured by the inverter is too low. Safe checks now: Record the code, time and whether the premises supply appears normal. Do not change grid settings; contact the installer if the event persists or repeats. Installer remedy: Check the grid condition and AC circuit against the ME3000SP manual. Protection points may be changed only after approval from the local network operator; escalate to SOFAR if the event repeats. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID05, BatOVP: The inverter is measuring too high a voltage from the battery (battery overvoltage). Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID09, HW_LLCBus_OVP: LLC bus voltage is too high and has triggered hardware protection, an internal inverter fault. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID10, HW_Boost_OVP: Boost voltage is too high and has triggered hardware protection, an internal inverter fault. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID11, HwBuckBoostOCP: Buck-Boost current is too high and has triggered hardware protection, an internal inverter fault. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID12, HwBatOCP: The battery current is too high and has triggered hardware protection. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID15, HwAcOCP: The grid (AC) current is too high and has triggered hardware protection. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID17, HwADFaultIGrid: Internal A/D sampling fault on the grid current channel. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID19, HwADFaultVGrid: Internal A/D sampling fault on the grid voltage channel. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID27, BatOCP: The inverter is measuring too much current from the batteries (battery overcurrent). Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID29, SwOCPInstan: Software-detected instantaneous AC overcurrent. The grid current is too high. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID30, BuckOCP: Buck circuit current is too high. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID31, AcRmsOCP: The AC output current (RMS) is too high. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID49, ConsistentFault_VGrid: Grid-voltage consistency fault. The two independent voltage measurements disagree. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID50, ConsistentFault_FGrid: Grid-frequency consistency fault. The two independent frequency measurements disagree. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID53, SpiCommLose: SPI internal communication lost between control boards. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID54, SciCommLose: SCI communication fault between the control and communication boards. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID57, OverTempFault_BAT: Battery temperature is too high. Safe checks now: From a safe position, keep the equipment area clear and note any obvious heat source or blocked airflow. Do not open equipment or change charge settings; contact the installer if it remains. Installer remedy: Check the ME3000SP or connected-battery ventilation and ambient conditions described by the manual. Review battery current settings only where the exact battery specification permits it, then escalate persistent alarms to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID58, OverTempFault_HeatSink: The inverter heatsink temperature is too high (inverter overheating). Safe checks now: From a safe position, keep the equipment area clear and note any obvious heat source or blocked airflow. Do not open equipment or change charge settings; contact the installer if it remains. Installer remedy: Check the ME3000SP or connected-battery ventilation and ambient conditions described by the manual. Review battery current settings only where the exact battery specification permits it, then escalate persistent alarms to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID59, OverTempFault_Env: The ambient/environmental temperature around the inverter is too high. Safe checks now: From a safe position, keep the equipment area clear and note any obvious heat source or blocked airflow. Do not open equipment or change charge settings; contact the installer if it remains. Installer remedy: Check the ME3000SP or connected-battery ventilation and ambient conditions described by the manual. Review battery current settings only where the exact battery specification permits it, then escalate persistent alarms to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID66, unrecoverBusOVP: Bus voltage is too high and has caused an unrecoverable fault. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID67, BitEPSunrecover: Unrecoverable battery overcurrent fault while operating in EPS (backup) mode. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID75, unrecoverEEPROM_W: Unrecoverable EEPROM write fault, internal memory error. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID76, unrecoverEEPROM_R: Unrecoverable EEPROM read fault, internal memory error. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID81, Over temperature: The ambient temperature around the inverter is too hot. Safe checks now: From a safe position, keep the equipment area clear and note any obvious heat source or blocked airflow. Do not open equipment or change charge settings; contact the installer if it remains. Installer remedy: Check the ME3000SP or connected-battery ventilation and ambient conditions described by the manual. Review battery current settings only where the exact battery specification permits it, then escalate persistent alarms to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID82, Over frequency: The grid (mains) frequency measured by the inverter is too high. Safe checks now: Record the code, time and whether the premises supply appears normal. Do not change grid settings; contact the installer if the event persists or repeats. Installer remedy: Check the grid condition and AC circuit against the ME3000SP manual. Protection points may be changed only after approval from the local network operator; escalate to SOFAR if the event repeats. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID83, Long dist Load Shedding: The inverter has received a remote command to decrease its power output. Safe checks now: Record the remote-control event and system state. Do not override controls or operate isolators; contact the installer if the command is unexpected or does not clear. Installer remedy: Confirm the source and intended state of the remote load-shedding or shutdown command in the ME3000SP controls. Correct the external command path rather than treating this as an internal fault. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID84, Long dist Off: The inverter has received a remote command to turn off. Safe checks now: Record the remote-control event and system state. Do not override controls or operate isolators; contact the installer if the command is unexpected or does not clear. Installer remedy: Confirm the source and intended state of the remote load-shedding or shutdown command in the ME3000SP controls. Correct the external command path rather than treating this as an internal fault. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID85, SOC is greater or equal to DOD or Battery voltage is low: The inverter has stopped discharging because the user-set depth-of-discharge (DOD) limit has been reached or the battery voltage is too low. Safe checks now: Record the code and allow the battery to recharge under its normal configured mode. Do not alter depth-of-discharge, voltage or charge settings; contact the installer if it recurs. Installer remedy: Check battery state, configured limits and charging availability against the ME3000SP and battery documentation. Preserve the protection limits and escalate an abnormal or recurring low-voltage condition. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID86, Bat Voltage Low Shut: The inverter has shut down to protect the batteries because the battery voltage is too low. Safe checks now: Record the code and allow the battery to recharge under its normal configured mode. Do not alter depth-of-discharge, voltage or charge settings; contact the installer if it recurs. Installer remedy: Check battery state, configured limits and charging availability against the ME3000SP and battery documentation. Preserve the protection limits and escalate an abnormal or recurring low-voltage condition. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID94, Software Version Is Not Consistent: The firmware/software versions on the inverter's boards are not consistent and require updating. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID95, CommEEPROMFault: The communication board EEPROM is faulty. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID96, RTCFault: Real-time clock (RTC) fault on the inverter. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID98, SDfault: SD card fault. The card needs replacement. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID100, BatOCD: Battery overcurrent fault during discharge. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID101, BatSCD: Battery overcurrent fault during charging. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID102, BatOV: Battery overvoltage fault. Safe checks now: Record the exact code, inverter model and time. Do not repeatedly restart the inverter, operate isolators or open equipment; contact the installer or SOFAR if the event remains. Installer remedy: Follow the ME3000SP troubleshooting procedure for this exact code, including one controlled restart only where the manual directs it. Stop repeated resets and escalate a persistent internal, battery or protection fault to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID103, BatUV: Battery undervoltage fault. Safe checks now: Record the code and allow the battery to recharge under its normal configured mode. Do not alter depth-of-discharge, voltage or charge settings; contact the installer if it recurs. Installer remedy: Check battery state, configured limits and charging availability against the ME3000SP and battery documentation. Preserve the protection limits and escalate an abnormal or recurring low-voltage condition. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID104, BatOTD: Battery high-temperature protection while discharging. Safe checks now: From a safe position, keep the equipment area clear and note any obvious heat source or blocked airflow. Do not open equipment or change charge settings; contact the installer if it remains. Installer remedy: Check the ME3000SP or connected-battery ventilation and ambient conditions described by the manual. Review battery current settings only where the exact battery specification permits it, then escalate persistent alarms to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID105, BatOTC: Battery high-temperature protection while charging. Safe checks now: From a safe position, keep the equipment area clear and note any obvious heat source or blocked airflow. Do not open equipment or change charge settings; contact the installer if it remains. Installer remedy: Check the ME3000SP or connected-battery ventilation and ambient conditions described by the manual. Review battery current settings only where the exact battery specification permits it, then escalate persistent alarms to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID106, BatUTD: Battery low-temperature protection while discharging. Safe checks now: From a safe position, keep the equipment area clear and note any obvious heat source or blocked airflow. Do not open equipment or change charge settings; contact the installer if it remains. Installer remedy: Check the ME3000SP or connected-battery ventilation and ambient conditions described by the manual. Review battery current settings only where the exact battery specification permits it, then escalate persistent alarms to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. - ID107, BatUTC: Battery low-temperature protection while charging. Safe checks now: From a safe position, keep the equipment area clear and note any obvious heat source or blocked airflow. Do not open equipment or change charge settings; contact the installer if it remains. Installer remedy: Check the ME3000SP or connected-battery ventilation and ambient conditions described by the manual. Review battery current settings only where the exact battery specification permits it, then escalate persistent alarms to SOFAR. Applicability: confirmed; ME3000SP; documented exact models ME3000SP; AC-coupled inverter; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual SOFAR ME3000SP user manual, troubleshooting and Event List. Legacy ME3000SP Event List only. Do not transfer the remedy to HYD or string-inverter families; Australian variant and firmware range are not confirmed. --- ## Hoymiles (HM / MI / HMS / HMT-series microinverters and the DTU monitoring gateway): fault codes Source: https://wattbench.ai/hoymiles-microinverter-error-codes Hoymiles alarm codes vary by microinverter family and firmware. Codes 121 and 124–149 now resolve to official current HMS/HMT troubleshooting tables; code 124 was upgraded from community-only after recovery in the current HMS manual. Codes 126 and 128 only exist in the HMT table, not HMS-1T; and 129 means something different in each manual, so it's split into HMS-1T's own 'Abnormal bias' entry and HMT's 'Software error code 129' rather than one description citing both as if they agreed. Codes 11–73 and 9000 remain search aids from the community-maintained OpenDTU decoder because no matching official instruction was found; they stay explicitly remedy-blank. The cited manuals are global family references and do not establish the installed Australian variant or firmware. Confirm the exact model in S-Miles before acting. Safety note: owners should record the code and app status. AC/DC disconnection, measurements, wiring, connectors and protection settings are qualified-installer tasks. - 11, Grid voltage surge: Community decoder: a sudden grid-voltage surge was reported. This label was not found in the reviewed manufacturer manuals. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 12, Grid voltage sharp drop: Community decoder: a sudden grid-voltage drop was reported. This label was not found in the reviewed manufacturer manuals. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 13, Grid frequency mutation: Community decoder: an abrupt grid-frequency change was reported. This label was not found in the reviewed manufacturer manuals. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 14, Grid phase mutation: Community decoder: an abrupt grid-phase change was reported. This label was not found in the reviewed manufacturer manuals. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 36, INV overvoltage or overcurrent: Community decoder: protection operated in the inverter stage. This label was not found in the reviewed manufacturer manuals. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 46, FB overvoltage: Community decoder: overvoltage in the flyback stage. This label was not found in the reviewed manufacturer manuals. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 47, FB overcurrent: Community decoder: overcurrent in the flyback stage. This label was not found in the reviewed manufacturer manuals. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 48, FB clamp overvoltage: Community decoder: flyback-clamp overvoltage. This label was not found in the reviewed manufacturer manuals. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 49, FB clamp overvoltage: Community decoder: a second flyback-clamp overvoltage event. This label was not found in the reviewed manufacturer manuals. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 71, Grid overvoltage load reduction (VW) enabled: Community decoder: Volt–Watt load reduction is active. This label was not found in the reviewed manufacturer manuals. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 72, Grid overfrequency load reduction (FW) enabled: Community decoder: Frequency–Watt load reduction is active. This label was not found in the reviewed manufacturer manuals. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 73, Over-temperature load reduction (TW) enabled: Community decoder: temperature-based load reduction is active. This label was not found in the reviewed manufacturer manuals. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. - 121, Over temperature protection: The microinverter has shut down on over-temperature protection because internal/ambient temperature exceeded safe limits. Safe checks now: From a safe position, keep the array area unobstructed and record unusual heat or poor airflow. Do not go onto the roof; contact the installer if the alarm remains in normal conditions. Installer remedy: Check the microinverter installation ventilation and ambient conditions against the exact HMS/HMT manual. Improve heat dissipation where required and escalate if suitable conditions do not clear the alarm. Applicability: confirmed; HMS-300/350/400/450/500-1T; documented exact models HMS-300-1T, HMS-350-1T, HMS-400-1T, HMS-450-1T, HMS-500-1T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMS-300/350/400/450/500-1T single-phase microinverter user manual. Current global HMS 1T family only. Australian variant and firmware range are not confirmed; community decoder entries are excluded. | confirmed; HMT-1600/1800/2000-4T LA; documented exact models HMT-1600-4T, HMT-1800-4T, HMT-2000-4T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMT-1600/1800/2000-4T LA user manual. Global HMT LA family only. Code 124, Australian variant and firmware range are not confirmed by this source; community decoder entries are excluded. - 124, Shut down by remote control: Current HMS family: the microinverter reports a remote shutdown command. The official handling path checks zero-export management and whether the unit was manually shut down. Safe checks now: Record that remote shutdown is reported and check only the visible S-Miles status. Do not override zero-export controls or operate equipment; contact the installer if the command is unexpected. Installer remedy: Check zero-export management and the manual shutdown state using the HMS manual. Correct the command source rather than treating code 124 as an internal hardware fault, then escalate if it persists. Applicability: confirmed; HMS-300/350/400/450/500-1T; documented exact models HMS-300-1T, HMS-350-1T, HMS-400-1T, HMS-450-1T, HMS-500-1T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMS-300/350/400/450/500-1T single-phase microinverter user manual. Current global HMS 1T family only. Australian variant and firmware range are not confirmed; community decoder entries are excluded. - 125, Grid configuration parameter error: The grid profile / grid configuration parameters loaded on the microinverter are incorrect or invalid. Safe checks now: Record the code and app status. Do not change the grid profile, firmware or device assignment; contact the installer if the alarm is frequent or does not recover. Installer remedy: Verify the exact model's grid configuration or firmware and the DTU communication path using the HMS/HMT manual. Use only Hoymiles-supplied files and escalate a recurring software event. Applicability: confirmed; HMS-300/350/400/450/500-1T; documented exact models HMS-300-1T, HMS-350-1T, HMS-400-1T, HMS-450-1T, HMS-500-1T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMS-300/350/400/450/500-1T single-phase microinverter user manual. Current global HMS 1T family only. Australian variant and firmware range are not confirmed; community decoder entries are excluded. | confirmed; HMT-1600/1800/2000-4T LA; documented exact models HMT-1600-4T, HMT-1800-4T, HMT-2000-4T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMT-1600/1800/2000-4T LA user manual. Global HMT LA family only. Code 124, Australian variant and firmware range are not confirmed by this source; community decoder entries are excluded. - 126, Software error code 126: Current HMT family: an internal software/firmware error reported by the microinverter. Often transient. (This code is not in the HMS-1T manual's table, which jumps 125 to 127.) Safe checks now: Record the code and app status. Do not change the grid profile, firmware or device assignment; contact the installer if the alarm is frequent or does not recover. Installer remedy: Verify the exact model's grid configuration or firmware and the DTU communication path using the HMS/HMT manual. Use only Hoymiles-supplied files and escalate a recurring software event. Applicability: confirmed; HMT-1600/1800/2000-4T LA; documented exact models HMT-1600-4T, HMT-1800-4T, HMT-2000-4T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMT-1600/1800/2000-4T LA user manual. Global HMT LA family only. Code 124, Australian variant and firmware range are not confirmed by this source; community decoder entries are excluded. - 127, Firmware error: A firmware error was detected on the microinverter, typically related to a firmware version or failed upgrade. Safe checks now: Record the code and app status. Do not change the grid profile, firmware or device assignment; contact the installer if the alarm is frequent or does not recover. Installer remedy: Verify the exact model's grid configuration or firmware and the DTU communication path using the HMS/HMT manual. Use only Hoymiles-supplied files and escalate a recurring software event. Applicability: confirmed; HMS-300/350/400/450/500-1T; documented exact models HMS-300-1T, HMS-350-1T, HMS-400-1T, HMS-450-1T, HMS-500-1T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMS-300/350/400/450/500-1T single-phase microinverter user manual. Current global HMS 1T family only. Australian variant and firmware range are not confirmed; community decoder entries are excluded. | confirmed; HMT-1600/1800/2000-4T LA; documented exact models HMT-1600-4T, HMT-1800-4T, HMT-2000-4T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMT-1600/1800/2000-4T LA user manual. Global HMT LA family only. Code 124, Australian variant and firmware range are not confirmed by this source; community decoder entries are excluded. - 128, Software error code 128: Current HMT family: an internal software/firmware error reported by the microinverter. Often transient. (This code is not in the HMS-1T manual's table either.) Safe checks now: Record the code and app status. Do not change the grid profile, firmware or device assignment; contact the installer if the alarm is frequent or does not recover. Installer remedy: Verify the exact model's grid configuration or firmware and the DTU communication path using the HMS/HMT manual. Use only Hoymiles-supplied files and escalate a recurring software event. Applicability: confirmed; HMT-1600/1800/2000-4T LA; documented exact models HMT-1600-4T, HMT-1800-4T, HMT-2000-4T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMT-1600/1800/2000-4T LA user manual. Global HMT LA family only. Code 124, Australian variant and firmware range are not confirmed by this source; community decoder entries are excluded. - 129 · Abnormal bias, Abnormal bias: Current HMS-1T family: the microinverter reports an abnormal bias condition — a distinct fault, not the generic 'software error' framing HMT uses for its own code 129 below. Safe checks now: Record the code and app status. Do not change the grid profile, firmware or device assignment; contact the installer if the alarm is frequent or does not recover. Installer remedy: Verify the exact model's grid configuration or firmware and the DTU communication path using the HMS/HMT manual. Use only Hoymiles-supplied files and escalate a recurring software event. Applicability: confirmed; HMS-300/350/400/450/500-1T; documented exact models HMS-300-1T, HMS-350-1T, HMS-400-1T, HMS-450-1T, HMS-500-1T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMS-300/350/400/450/500-1T single-phase microinverter user manual. Current global HMS 1T family only. Australian variant and firmware range are not confirmed; community decoder entries are excluded. - 129, Software error code 129: Current HMT family: an internal software error, per the manufacturer troubleshooting table. HMS-1T's own code 129 means something different — see 'Abnormal bias' above. Safe checks now: Record the code and app status. Do not change the grid profile, firmware or device assignment; contact the installer if the alarm is frequent or does not recover. Installer remedy: Verify the exact model's grid configuration or firmware and the DTU communication path using the HMS/HMT manual. Use only Hoymiles-supplied files and escalate a recurring software event. Applicability: confirmed; HMT-1600/1800/2000-4T LA; documented exact models HMT-1600-4T, HMT-1800-4T, HMT-2000-4T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMT-1600/1800/2000-4T LA user manual. Global HMT LA family only. Code 124, Australian variant and firmware range are not confirmed by this source; community decoder entries are excluded. - 130, Offline: The microinverter is offline. The DTU cannot communicate with it / it is not reporting to the monitoring system. Safe checks now: Check the microinverter's last-report time in S-Miles and record which unit is offline. Do not operate solar switches or go onto the roof; contact the installer if it remains offline. Installer remedy: Confirm the recorded serial number and separate DTU-to-cloud from DTU-to-microinverter communication using the exact HMS/HMT procedure. Correct the communication path before considering device replacement. Applicability: confirmed; HMS-300/350/400/450/500-1T; documented exact models HMS-300-1T, HMS-350-1T, HMS-400-1T, HMS-450-1T, HMS-500-1T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMS-300/350/400/450/500-1T single-phase microinverter user manual. Current global HMS 1T family only. Australian variant and firmware range are not confirmed; community decoder entries are excluded. | confirmed; HMT-1600/1800/2000-4T LA; documented exact models HMT-1600-4T, HMT-1800-4T, HMT-2000-4T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMT-1600/1800/2000-4T LA user manual. Global HMT LA family only. Code 124, Australian variant and firmware range are not confirmed by this source; community decoder entries are excluded. - 141, Grid overvoltage: AC grid voltage exceeded the upper protection limit, so the microinverter stopped feeding in. Safe checks now: Record the alarm, time and whether the premises supply appears normal. It may recover when the grid returns to range; do not change grid limits and contact the installer if it repeats. Installer remedy: Check the measured grid voltage, frequency or rate of change against the exact HMS/HMT profile. Obtain the local network operator's consent before any protection-limit change and escalate persistent supply abnormalities. Applicability: confirmed; HMS-300/350/400/450/500-1T; documented exact models HMS-300-1T, HMS-350-1T, HMS-400-1T, HMS-450-1T, HMS-500-1T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMS-300/350/400/450/500-1T single-phase microinverter user manual. Current global HMS 1T family only. Australian variant and firmware range are not confirmed; community decoder entries are excluded. | confirmed; HMT-1600/1800/2000-4T LA; documented exact models HMT-1600-4T, HMT-1800-4T, HMT-2000-4T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMT-1600/1800/2000-4T LA user manual. Global HMT LA family only. Code 124, Australian variant and firmware range are not confirmed by this source; community decoder entries are excluded. - 142, 10 min value grid overvoltage: The 10-minute average grid voltage exceeded the allowed limit (sustained overvoltage protection). Safe checks now: Record the alarm, time and whether the premises supply appears normal. It may recover when the grid returns to range; do not change grid limits and contact the installer if it repeats. Installer remedy: Check the measured grid voltage, frequency or rate of change against the exact HMS/HMT profile. Obtain the local network operator's consent before any protection-limit change and escalate persistent supply abnormalities. Applicability: confirmed; HMS-300/350/400/450/500-1T; documented exact models HMS-300-1T, HMS-350-1T, HMS-400-1T, HMS-450-1T, HMS-500-1T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMS-300/350/400/450/500-1T single-phase microinverter user manual. Current global HMS 1T family only. Australian variant and firmware range are not confirmed; community decoder entries are excluded. | confirmed; HMT-1600/1800/2000-4T LA; documented exact models HMT-1600-4T, HMT-1800-4T, HMT-2000-4T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMT-1600/1800/2000-4T LA user manual. Global HMT LA family only. Code 124, Australian variant and firmware range are not confirmed by this source; community decoder entries are excluded. - 143, Grid undervoltage: AC grid voltage fell below the lower protection limit. Safe checks now: Record the alarm, time and whether the premises supply appears normal. It may recover when the grid returns to range; do not change grid limits and contact the installer if it repeats. Installer remedy: Check the measured grid voltage, frequency or rate of change against the exact HMS/HMT profile. Obtain the local network operator's consent before any protection-limit change and escalate persistent supply abnormalities. Applicability: confirmed; HMS-300/350/400/450/500-1T; documented exact models HMS-300-1T, HMS-350-1T, HMS-400-1T, HMS-450-1T, HMS-500-1T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMS-300/350/400/450/500-1T single-phase microinverter user manual. Current global HMS 1T family only. Australian variant and firmware range are not confirmed; community decoder entries are excluded. | confirmed; HMT-1600/1800/2000-4T LA; documented exact models HMT-1600-4T, HMT-1800-4T, HMT-2000-4T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMT-1600/1800/2000-4T LA user manual. Global HMT LA family only. Code 124, Australian variant and firmware range are not confirmed by this source; community decoder entries are excluded. - 144, Grid overfrequency: AC grid frequency exceeded the upper protection limit. Safe checks now: Record the alarm, time and whether the premises supply appears normal. It may recover when the grid returns to range; do not change grid limits and contact the installer if it repeats. Installer remedy: Check the measured grid voltage, frequency or rate of change against the exact HMS/HMT profile. Obtain the local network operator's consent before any protection-limit change and escalate persistent supply abnormalities. Applicability: confirmed; HMS-300/350/400/450/500-1T; documented exact models HMS-300-1T, HMS-350-1T, HMS-400-1T, HMS-450-1T, HMS-500-1T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMS-300/350/400/450/500-1T single-phase microinverter user manual. Current global HMS 1T family only. Australian variant and firmware range are not confirmed; community decoder entries are excluded. | confirmed; HMT-1600/1800/2000-4T LA; documented exact models HMT-1600-4T, HMT-1800-4T, HMT-2000-4T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMT-1600/1800/2000-4T LA user manual. Global HMT LA family only. Code 124, Australian variant and firmware range are not confirmed by this source; community decoder entries are excluded. - 145, Grid underfrequency: AC grid frequency fell below the lower protection limit. Safe checks now: Record the alarm, time and whether the premises supply appears normal. It may recover when the grid returns to range; do not change grid limits and contact the installer if it repeats. Installer remedy: Check the measured grid voltage, frequency or rate of change against the exact HMS/HMT profile. Obtain the local network operator's consent before any protection-limit change and escalate persistent supply abnormalities. Applicability: confirmed; HMS-300/350/400/450/500-1T; documented exact models HMS-300-1T, HMS-350-1T, HMS-400-1T, HMS-450-1T, HMS-500-1T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMS-300/350/400/450/500-1T single-phase microinverter user manual. Current global HMS 1T family only. Australian variant and firmware range are not confirmed; community decoder entries are excluded. | confirmed; HMT-1600/1800/2000-4T LA; documented exact models HMT-1600-4T, HMT-1800-4T, HMT-2000-4T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMT-1600/1800/2000-4T LA user manual. Global HMT LA family only. Code 124, Australian variant and firmware range are not confirmed by this source; community decoder entries are excluded. - 146, Rapid grid frequency change rate: The rate of change of grid frequency (ROCOF) exceeded the allowed limit. Safe checks now: Record the alarm, time and whether the premises supply appears normal. It may recover when the grid returns to range; do not change grid limits and contact the installer if it repeats. Installer remedy: Check the measured grid voltage, frequency or rate of change against the exact HMS/HMT profile. Obtain the local network operator's consent before any protection-limit change and escalate persistent supply abnormalities. Applicability: confirmed; HMS-300/350/400/450/500-1T; documented exact models HMS-300-1T, HMS-350-1T, HMS-400-1T, HMS-450-1T, HMS-500-1T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMS-300/350/400/450/500-1T single-phase microinverter user manual. Current global HMS 1T family only. Australian variant and firmware range are not confirmed; community decoder entries are excluded. | confirmed; HMT-1600/1800/2000-4T LA; documented exact models HMT-1600-4T, HMT-1800-4T, HMT-2000-4T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMT-1600/1800/2000-4T LA user manual. Global HMT LA family only. Code 124, Australian variant and firmware range are not confirmed by this source; community decoder entries are excluded. - 147, Power grid outage: The microinverter detected a grid outage. Safe checks now: Confirm whether the premises has grid supply and record the alarm. Do not operate solar switches or rooftop equipment; contact the installer if normal supply is present but the alarm remains. Installer remedy: Check the AC supply, connection and anti-islanding condition under the exact HMS/HMT procedure. Restore service only after a stable grid and sound AC connection are confirmed. Applicability: confirmed; HMS-300/350/400/450/500-1T; documented exact models HMS-300-1T, HMS-350-1T, HMS-400-1T, HMS-450-1T, HMS-500-1T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMS-300/350/400/450/500-1T single-phase microinverter user manual. Current global HMS 1T family only. Australian variant and firmware range are not confirmed; community decoder entries are excluded. | confirmed; HMT-1600/1800/2000-4T LA; documented exact models HMT-1600-4T, HMT-1800-4T, HMT-2000-4T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMT-1600/1800/2000-4T LA user manual. Global HMT LA family only. Code 124, Australian variant and firmware range are not confirmed by this source; community decoder entries are excluded. - 148, Grid disconnection: The microinverter detected disconnection from the grid (loss of AC connection). Safe checks now: Confirm whether the premises has grid supply and record the alarm. Do not operate solar switches or rooftop equipment; contact the installer if normal supply is present but the alarm remains. Installer remedy: Check the AC supply, connection and anti-islanding condition under the exact HMS/HMT procedure. Restore service only after a stable grid and sound AC connection are confirmed. Applicability: confirmed; HMS-300/350/400/450/500-1T; documented exact models HMS-300-1T, HMS-350-1T, HMS-400-1T, HMS-450-1T, HMS-500-1T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMS-300/350/400/450/500-1T single-phase microinverter user manual. Current global HMS 1T family only. Australian variant and firmware range are not confirmed; community decoder entries are excluded. | confirmed; HMT-1600/1800/2000-4T LA; documented exact models HMT-1600-4T, HMT-1800-4T, HMT-2000-4T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMT-1600/1800/2000-4T LA user manual. Global HMT LA family only. Code 124, Australian variant and firmware range are not confirmed by this source; community decoder entries are excluded. - 149, Island detected: Anti-islanding protection tripped. The microinverter detected an islanding condition and disconnected for safety. Safe checks now: Confirm whether the premises has grid supply and record the alarm. Do not operate solar switches or rooftop equipment; contact the installer if normal supply is present but the alarm remains. Installer remedy: Check the AC supply, connection and anti-islanding condition under the exact HMS/HMT procedure. Restore service only after a stable grid and sound AC connection are confirmed. Applicability: confirmed; HMS-300/350/400/450/500-1T; documented exact models HMS-300-1T, HMS-350-1T, HMS-400-1T, HMS-450-1T, HMS-500-1T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMS-300/350/400/450/500-1T single-phase microinverter user manual. Current global HMS 1T family only. Australian variant and firmware range are not confirmed; community decoder entries are excluded. | confirmed; HMT-1600/1800/2000-4T LA; documented exact models HMT-1600-4T, HMT-1800-4T, HMT-2000-4T; Role not confirmed; documentation region International; Australian/regional variant not confirmed; firmware not documented; manual Hoymiles HMT-1600/1800/2000-4T LA user manual. Global HMT LA family only. Code 124, Australian variant and firmware range are not confirmed by this source; community decoder entries are excluded. - 9000, Microinverter suspected stolen: Community decoder: an anti-theft event was reported. This code was not found in the reviewed manufacturer manuals. Applicability: Brand-level guidance only. Exact model family, product role, Australian or regional variant, firmware range and supporting manual applicability are not confirmed. --- # Calculators and source checks Transparent, in-browser field calculators. No sign-up is required; signed-in users can deliberately save a calculator result. Calculator results are estimates for guidance, not a quote or a compliance certificate. Entries marked "Type: source check" give no estimate and save nothing: they link to the live authority pages and record at most that the user checked them. The authority's page is the record, not Wattbench. Entries marked "Type: printable card" give no estimate and save nothing: they lay out reviewed library text for printing. ## Solar System Size Calculator Source: https://wattbench.ai/solar-system-size-calculator Turn your daily energy use, location-specific sun hours and entered system losses into an indicative array size and panel count. - Converts your daily energy use, sun hours and system losses into an indicative array size in kilowatts. - Also estimates panel count from the module power entered. - Results are estimates that run in your browser, not a quote or engineering specification. ## NEM12 Interval Data Load Profiler Source: https://wattbench.ai/nem12-load-profiler Read a customer's NEM12 meter data file in your browser for daily grid import, kWh in your own time windows, peak interval-average demand, an average day and export totals. - Reads the NEM12 file in your browser: nothing is uploaded or saved, and the NMI is shown only by its last four characters. - Takes each channel's interval length from its 200 record and honours the quality flags in its 300 and 400 records, counting substituted, final substituted and estimated readings. - Reports daily grid import, kWh inside time windows you set (including across midnight), an hour-by-hour average day and export totals. - The peak is the interval-average kW of each channel's highest interval, not instantaneous demand and not a per-phase current. - Hands the measured figures to the battery and system size calculators, labelled with the file's date range. Measured history, not a forecast. ## Solar Payback Calculator Source: https://wattbench.ai/solar-payback-calculator Estimate annual savings and payback period from system cost, generation, self-consumption, electricity rate and feed-in tariff. - Estimates annual savings and how many years a system takes to pay for itself. - Uses your system cost, generation, self-consumption, electricity rate and feed-in tariff as inputs. - Also projects 10-year and 25-year net positions to show longer-term value. ## Solar Panel Power Density Calculator Source: https://wattbench.ai/solar-panel-density-calculator From rated power and module dimensions, compute power density in W/m², module efficiency and panels needed per kilowatt. - Computes power density in watts per square metre from a panel's rated power and dimensions. - Also returns module efficiency and how many panels are needed per kilowatt. - Useful for comparing how much power different modules pack into the same area. ## Single or Three-Phase Supply Check Source: https://wattbench.ai/single-or-three-phase-power Use visible main-switch or meter clues to identify a likely single- or three-phase supply without opening the switchboard. - Uses a visible main-switch or meter clue to identify the likely existing supply. - Does not recommend a supply upgrade or infer network connection limits. - Keeps the check external to the switchboard and directs uncertain users to a licensed electrician. ## Three-Phase Load Balance Worksheet Source: https://wattbench.ai/three-phase-load-balance-worksheet Compare entered phase currents, identify the highest and lowest phase, and quantify the spread without asserting a compliance limit. ## Supply Headroom Worksheet Source: https://wattbench.ai/supply-headroom-worksheet Add the currents of proposed equipment to the per-phase demand you measured, and see the headroom in amps against the rating you enter. Measured-demand arithmetic only. - Measured-demand arithmetic. This is not the AS/NZS 3000 maximum-demand calculation and not a supply-capacity determination; the network and the licensed designer decide capacity. - Existing demand is per-phase current you measured with a clamp meter, labelled with the window you measured over, or figures you enter and label as yours. A whole-of-site kW figure is not accepted as per-phase demand. - Each new load is entered in amps, or in kW with the power factor you enter. Voltage, power factor and the rating all start empty; with no power factor a kW load is not converted. - Each phase reads as headroom in A (arithmetic), or as the amount by which it exceeds the entered rating. On a three-phase site it shows the placement of unallocated single-phase loads that minimises the spread, as arithmetic rather than a design instruction. ## Solar Battery Size Calculator Source: https://wattbench.ai/solar-battery-size-calculator Size a home battery from your overnight energy use, days of autonomy, depth of discharge and round-trip efficiency. - Sizes a home battery from your overnight energy use and how many days of autonomy you want. - Factors in depth of discharge and round-trip efficiency to separate usable from nominal capacity. - Shows the usable and nominal kilowatt-hours and how much of your nightly load is covered. ## Battery Backup Runtime Calculator Source: https://wattbench.ai/battery-backup-runtime-calculator Estimate how long a battery can support a nominated essential load from usable capacity, backup reserve and conversion efficiency. - Turns usable battery capacity, reserve, conversion efficiency and a continuous essential load into an indicative runtime. - Checks the nominated load against the backup system's continuous power limit, which is separate from stored energy. - Does not model start-up surge, changing loads, battery temperature or product-specific backup behaviour. Compare starting demand with the backup surge rating in the Essential Load Schedule's starting-load check, and confirm the rest against the equipment documentation. ## Battery Charge-Time & Surplus Planner Source: https://wattbench.ai/battery-charge-time-planner Estimate energy needed and charge time from usable capacity, starting and target state of charge, surplus power and entered efficiency. ## Essential Load Schedule Source: https://wattbench.ai/essential-load-schedule Turn entered continuous loads and daily run-times into a backup power and energy schedule, then compare each load's starting demand with the backup system's own surge rating. - Totals the entered continuous loads and their daily run-times into concurrent power and daily energy. - Compares each motor, compressor or pump's entered starting demand, and the loads that may start together, with the surge rating you enter from the inverter or battery documentation. - Never converts between amps, kVA and kW, and never supplies a starting figure. A load without a published figure is shown as unknown, not as zero. ## Solar STC Certificate Estimate (Australia) Source: https://wattbench.ai/solar-stc-rebate-calculator Estimate certificate count and an entered gross value from system size, zone rating, deeming years and certificate price. - Estimates the number of certificates from the values entered. - Uses your system size, zone rating, deeming years and the STC price as inputs. - Returns certificate count and gross value without presenting it as a quote. ## Battery STC & WA Rebate Check Source: https://wattbench.ai/battery-stc-wa-rebate-check Estimate battery STCs from the compliance-certification date and capacity, with a conditional WA programme amount for Synergy or Horizon Power areas. - Uses the legislated federal battery factors and capacity tiers for the expected compliance-certification date. - Separates the calculated STC count from the eligibility conditions that still need to be verified. - Shows WA programme amounts as conditional and never invents a live certificate price. ## Solar Cable Voltage Drop Calculator Source: https://wattbench.ai/solar-cable-voltage-drop-calculator Work out voltage drop on a DC string or single-phase AC run from the entered length, current, conductor size, voltage and material. - Works out voltage drop on a DC string or single-phase AC run. - Uses run length, current, conductor size, voltage and material as inputs. - Returns the drop in volts and as a percentage without inferring the applicable design limit. ## AC Voltage Rise Worksheet Source: https://wattbench.ai/ac-voltage-rise-worksheet Compare two entered voltage readings and document the rise in volts and percentage without applying a compliance verdict. ## AC Voltage Rise Budget Source: https://wattbench.ai/ac-voltage-rise-budget Chain the AC cable segments from the inverter to the point of supply, estimate each segment's voltage rise at the inverter's rated output current, and compare the total with a budget you enter. - Works out the estimated voltage rise on each AC cable segment between the inverter and the point of supply, adds them up and names the segment contributing the most. - Single-phase segments use a factor of 2 and balanced three-phase segments use √3 with line current. A single-phase inverter on a three-phase cable still uses the factor of 2, because its current flows on one active and the neutral. - Without a Vc from AS/NZS 3008.1 each segment is resistance-only near 20 °C and ignores reactance, so it is likely understated at operating temperature. - Wattbench does not supply a rise budget. You enter your own from AS/NZS 4777.1 and the network's connection rules, and the result reads as within or over that entered budget, not as a compliance verdict. - Naming a segment to upsize is not a current-carrying-capacity check. Confirm the conductor's rating against the AS/NZS 3008.1 tables. ## Cable Sizing Calculator Source: https://wattbench.ai/solar-cable-sizing-calculator Find the minimum conductor size that keeps a DC string or AC run under its voltage-drop limit, then round up to the next standard cable size, with the resulting drop shown. - Sizes a conductor for voltage drop only: the minimum cross-sectional area that keeps drop under your target limit, then the next standard size up. - This is not a current-carrying-capacity (CCC) check. You must still confirm the conductor's rating against AS/NZS 3008.1 tables for your install method, grouping and ambient temperature. - The voltage-drop target is supplied by the user; the tool does not infer which design criterion applies. ## Continuity and Loop Impedance Expectation Source: https://wattbench.ai/loop-impedance-expectation When an inverter or battery AC circuit, or an array bonding reading, looks high: the R1+R2, R2 and Zs the conductors you enter give by arithmetic, beside your measured value, with the difference and the causes to check. - Expected (arithmetic) vs measured. The expectation is conductor resistance worked from the material, size, length and temperature you enter; it is not a test result and states no figure from AS/NZS 3000 or AS/NZS 3017. - Resistance is ρ(T) × L ÷ A with the International Annealed Copper Standard resistivity and temperature coefficient from NBS Handbook 100. Copper only: aluminium is not offered. - Length, cross-sections, test temperature, Ze and any band all start empty. With no band entered the expectation is one value labelled resistance-only at the nominal cross-section, because actual stranded conductors differ. - Zs is Ze plus R1+R2, shown only when you enter Ze and where it came from. Your measured value is set beside the expectation with the difference and the causes to check, never a verdict. ## Roof Direction & Pitch Check Source: https://wattbench.ai/solar-tilt-orientation-calculator Record a roof's direction and pitch, then read source-backed generation-timing guidance without an invented yield percentage. - Records the direction and measured or documented pitch of a roof area. - Explains whether the aspect shifts generation earlier or later in the day. - Leaves production estimates to location-specific design software rather than presenting unsupported precision. ## Near-Shade Sun-Path Check Source: https://wattbench.ai/near-shade-sun-path-check Find when a tree, building or chimney near the array has the sun behind it, on a solstice and equinox sun-path chart, and the row spacing that is shade-free for a window you choose. - Draws the sun's path on the June and December solstices and the equinoxes for the latitude and longitude you enter, with each obstruction's bearing sector drawn up to its top line. - Lists, for the 21st of each month, the times the sun is above the horizon but behind each obstruction, in the standard time or solar time you choose. Daylight saving is not applied. - Gives the row spacing that is shade-free for the date and time window you choose, from the panel length and tilt you enter. It is sun geometry, not a racking or structural design. - Bearings are true north unless you enter a magnetic declination. Nothing is pre-filled, and coordinates are never stored or put in the address. ## Solar String Sizing Calculator Source: https://wattbench.ai/solar-string-sizing-calculator Work out how many panels can go in series on a string, within the inverter's MPPT window and under the maximum system voltage, using temperature-corrected module voltages. - Cold mornings raise a module's open-circuit voltage, so the coldest expected temperature sets the maximum panels you can safely put in series. - Hot afternoons lower the operating (Vmp) voltage, so the hottest expected temperature sets the minimum string length to stay within the inverter's MPPT window. - The result is a calculated range of modules per string, an estimate to sanity-check a design, not a substitute for a licensed system designer. ## String Test Verifier Source: https://wattbench.ai/string-test-verifier Record each string's Voc, Isc and polarity, compare them with temperature-corrected expected values and with sibling strings, and keep the readings on this device. - Compares each string's measured Voc with a temperature-corrected expected value built from the datasheet Voc, its coefficient and a measured module temperature. - Scales datasheet Isc only when you enter irradiance. Without it, Isc is compared between sibling strings, and in low light the sibling spread is the primary check. - Labels arithmetic patterns, such as Voc about one module's worth low, as inferences to check, and reads each string as consistent or review against the tolerance you set. - Readings stay in this browser on this device until you clear them or copy them as text. ## Right-Now Output Spot Check Source: https://wattbench.ai/output-spot-check Check whether the inverter's live reading is plausible for a clear sky, against a clear-sky ceiling built offline from the sun's position, the array and your own figures, with no irradiance meter. - Builds a clear-sky ceiling for the plane of array from the sun's position, the Haurwitz clear-sky model, the Erbs beam and diffuse split and Hay and Davies transposition, plus ground reflection from the albedo you enter. - Turns that into an array ceiling from your DC kWp, the datasheet Pmax coefficient and the module temperature you measure, and labels it before losses unless you enter your own. - Gives one of three verdicts: above the clear-sky ceiling, below your threshold, or can't judge. It can't judge until you confirm a clear sky with the sun unobstructed on the array. - Shows every step as text. Location is typed or taken from the device on tap, and is never stored or put in the address. ## Module & Inverter Compatibility Worksheet Source: https://wattbench.ai/module-inverter-compatibility-worksheet Compare entered string voltage and current against documented inverter input limits at the design conditions you supply. ## Multi-Face MPPT Allocation Planner Source: https://wattbench.ai/mppt-allocation-planner Allocate strings from several roof faces across one inverter's MPPT inputs, and check temperature-corrected voltages and summed currents against the limits you enter. - Checks each MPPT input of one inverter: the highest string Voc at your cold design temperature, the Vmp window at both design temperatures, and the currents of its parallel strings. - Sums Imp against the maximum input current and Isc against the maximum short-circuit current. Without an Isc temperature coefficient both read STC values only, not temperature-corrected. - Describes, without estimating a loss, strings that span faces with different orientation and parallel strings with different module counts on one input. - Every datasheet value, limit and design temperature starts empty, and no current multiplier is applied. Results read within or outside the limit you entered. ## Equipment Status Check Source: https://wattbench.ai/product-status-check Type: source check Check an exact inverter, PV module or battery model against the live Clean Energy Council (CEC) approved list, delisting and product recall pages and CSIP-AUS sources, plus Western Power network sources for WA sites. - Links to the live Clean Energy Council list, de-listing and recall pages for the exact model rather than copying them. - Western Power connection sources appear only for WA sites on Western Power's network; Horizon Power sites and other states are pointed to the site's own distributor. - A tick or copied line records that you checked a source on a date. It is not a listing, connection or accreditation result. ## Owner Handover Card Source: https://wattbench.ai/owner-handover-card Type: printable card Print a one-page card for the system owner: the manufacturer's codes with the reviewed owner action for each, when to call the installer, and a blank list of what to send. - Owner actions are the fault libraries' reviewed homeowner remedies, word for word; installer remedies and documented fixes are never printed. - Codes and titles appear exactly as the library records them, and every row keeps its product fit, so brand-level guidance is never shown as model-specific. - One A4 page in black and white. Write-in lines are left blank for the installer to complete by hand, and nothing is sent, saved or put in the address. ## DC:AC Ratio (Inverter Load Ratio) Calculator Source: https://wattbench.ai/solar-dc-ac-ratio-calculator Calculate the ratio of entered array DC capacity to inverter AC rating, without prescribing an unsupported design band. - The DC:AC ratio (inverter load ratio) divides the array's DC capacity by the inverter's AC rating. - A ratio above one means the entered array DC capacity exceeds the inverter AC rating. - Clipping is possible when available DC power exceeds inverter output, but the correct design requires model- and site-specific checks. ## End-of-Life & Battery Return Pathway Source: https://wattbench.ai/end-of-life-and-returns Type: source check For removal, replacement and warranty-return jobs: state and territory agency pages on PV modules, inverters and batteries, the Commonwealth's stewardship status, the ADG Code and manufacturer battery return pages. - Links to each state or territory agency's own page on e-waste and disposal for PV modules, inverters and batteries, with a clause on what each page covers; states without a confirmed page say who to contact. - Stewardship schemes and pilots are described only in the words of the Commonwealth or state page, with the date that page carries. - Moving a lithium battery is per the ADG Code and the manufacturer's return instructions, which are linked rather than restated. No recycler, collector or carrier is recommended. ## Grid Profile Settings Finder Source: https://wattbench.ai/grid-profile-settings Type: source check Where each inverter family sets its AS/NZS 4777.2 region or grid profile and which manufacturer document says so, with each distribution network's own inverter settings page and the region quoted only where that page states it. - For each brand with a fault library, the menu or app path where the region or grid profile is chosen and the profile names exactly as the manufacturer's document prints them, with the section and page they were read from. - Each network's own inverter settings page, with the region quoted in that page's words; where the page does not state it, the entry says to confirm with the network. - Names and paths only: no set-point, threshold, ramp, reconnection time, export limit or power factor is restated. AS/NZS 4777.2 is linked, not reproduced. ## Inverter AC Protection Sheet Source: https://wattbench.ai/inverter-ac-protection Type: source check What each inverter family's installation manual states about the external RCD, the upstream AC breaker and the AC conductor range, with the document, revision, page and date read for every figure. - For each family, the manufacturer's own statement on an external RCD, the upstream AC breaker and the AC conductor range, each with the section and page it was read from. - Breaker ratings keep the manual's framing: a maximum, a recommendation, a minimum or a plain rating. Where a manual's own figures disagree, all of them are shown. - Manufacturer statements only. The wiring rules and the grid connection standard are linked by code, not restated, and a family-level manual is not an exact-model claim. --- # Troubleshooting playbooks Symptom-led field sequences with a clear safety boundary. They organise evidence and escalation; they do not replace licensed electrical work or required commissioning procedures. ## Inverter Not Producing Power Source: https://wattbench.ai/troubleshooting/inverter-not-producing-power A safe, ordered triage for a system showing zero generation, from site conditions and monitoring through to the fault record an installer needs. Safety: Owners should stop at app, display and accessible switchboard observations. Do not remove covers, open an inverter, test live conductors or access rooftop equipment. ### Confirm the symptom - Record the time, weather and whether the reading comes from the inverter, retailer meter or monitoring app. - Check whether the whole system is at zero or only one inverter, string or phase appears affected. - Capture the exact alert text, code and model before restarting anything. ### Safe observations - Confirm the monitoring device has connectivity and that its timestamp is current. - Look for a visible trip or isolation state without operating equipment you are not authorised to operate. - Check whether a grid outage or planned network interruption is affecting the site. ### Installer handover - Provide the model, serial number, exact code, first occurrence and any recent site work. - Include clear photos of the display and accessible switch positions, without opening equipment. - Use the matching Wattbench fault library to identify the manufacturer-documented next check. ## Solar System Producing Less Than Expected Source: https://wattbench.ai/troubleshooting/solar-system-producing-less-than-expected Separate normal variation from a real performance issue using like-for-like periods, monitoring evidence and a structured site handover. Safety: Performance review does not require opening equipment or going onto a roof. Electrical testing and rooftop inspection are licensed-person work. ### Compare like with like - Compare similar weather, season and time windows rather than a single day against an annual promise. - Check whether consumption, export limiting or battery charging explains the apparent difference. - Confirm the monitoring portal is receiving complete data rather than estimating missing intervals. ### Build the evidence - Export or screenshot daily generation for the affected period and a known-good comparison period. - Note new shade, soiling visible from ground level, network events and any recent electrical work. - Record whether the loss affects a particular inverter, MPPT, string or phase. ### Escalate clearly - Send the installer the comparison, site details and exact monitoring symptoms. - Ask for the design expectation and the measurement method used to assess the shortfall. - Treat persistent faults, damage, heat, smell or unusual noise as a stop-and-escalate condition. ## Grid Overvoltage and Repeated Inverter Tripping Source: https://wattbench.ai/troubleshooting/grid-overvoltage-inverter-tripping Collect the evidence needed to distinguish a network condition, site voltage rise, settings issue or installation problem without guessing at the cause. Safety: Voltage measurement, inverter settings and switchboard work must be performed by an appropriately licensed person. Do not defeat protection settings to keep a system online. ### Capture the event - Record the exact code, event time, duration and whether the inverter reconnects automatically. - Compare the event with site load, solar output and nearby systems where evidence is available. - Preserve monitoring logs before clearing alarms or changing configuration. ### Licensed checks - Confirm approved regional settings and document any changes rather than applying an undocumented workaround. - Assess voltage at appropriate points under relevant operating conditions. - Review conductor route, size, connections, phase conditions and the network connection approval. ### Network escalation - Package timestamps, measurements, inverter logs and connection details for the relevant DNSP. - Separate evidence observed at the point of supply from voltage rise within the installation. - Retain the case reference and final resolution in the job record. ## Home Battery Not Charging Source: https://wattbench.ai/troubleshooting/battery-not-charging Work through operating mode, reserve settings, solar availability, communications and fault evidence before escalating a battery issue. Safety: Do not open a battery enclosure, disconnect battery cabling or attempt electrical tests. Heat, swelling, odour, smoke or physical damage requires immediate isolation only where safe and emergency escalation. ### Check the operating context - Confirm the selected operating mode, backup reserve and any scheduled charging window in the app. - Check whether available solar exceeds household load and whether grid charging is permitted by the configured mode. - Confirm the app timestamp and battery communications are current. ### Record what the system says - Capture state of charge, power flow, operating mode and the exact warning or code. - Note recent firmware, tariff, VPP, installer or network changes. - Record whether the issue is continuous, scheduled or associated with temperature or backup operation. ### Escalate - Provide screenshots, timestamps, model details and the observed power flow to the installer. - Use the applicable manufacturer library where Wattbench has a documented match. - Do not change installer-only parameters without the responsible installer or manufacturer process. ## Solar Commissioning Handover Checklist Source: https://wattbench.ai/troubleshooting/solar-commissioning-handover-checklist A practical record of the information, access and evidence that should leave the site with the customer and installer team. Safety: This organisational checklist does not replace the commissioning, verification or documentation requirements that apply to the installation. ### System record - Capture installed make, model, serial numbers, array layout and the approved connection details. - Store the final design, required certificates, test records and clear equipment photographs. - Record firmware, region settings, export control and monitoring configuration as commissioned. ### Customer access - Confirm the customer controls their monitoring account and recovery email. - Explain normal operation, shutdown information, alerts, backup behaviour and who to contact. - Provide warranties, manuals, maintenance guidance and the service escalation path. ### Close the job - Confirm outstanding network, retailer, certificate or incentive steps and their owner. - Record any agreed follow-up and the date the system was handed over. - Keep the complete job record accessible for later service work. ## Solar Monitoring Offline or Not Updating Source: https://wattbench.ai/troubleshooting/solar-monitoring-offline Separate a monitoring or communications outage from a generation fault and package the evidence needed for support. Safety: Stay with app, router and accessible display observations. Do not open communications gateways, inverters or switchboards. ### Confirm the data gap - Check the last successful timestamp and whether the inverter display still shows production. - Compare the app with the retailer meter only as separate evidence; they measure different things. - Record whether one device or the whole site is missing. ### Check ordinary connectivity - Confirm the site internet is working and note any router, password or network change. - Use only the manufacturer-documented owner reconnection process. - Do not factory-reset equipment or change installer settings. ### Escalate with evidence - Provide timestamps, screenshots, model and gateway status to the installer or manufacturer. - State clearly whether generation appears normal while monitoring is stale. - Save the resolution in the job record. ## Inverter Intermittently Restarting Source: https://wattbench.ai/troubleshooting/inverter-intermittent-restarts Build a timestamped pattern for repeated restarts without masking protection events or guessing at the cause. Safety: Do not repeatedly power-cycle equipment, defeat protection or open electrical enclosures. Heat, odour, arcing or damage requires urgent escalation. ### Capture the pattern - Record exact restart times, weather, site load and solar output. - Capture every visible warning, code and firmware version. - Note whether the restart affects one unit or the whole site. ### Preserve context - Export monitoring events before they roll off. - Note recent firmware, network, battery, generator or electrical changes. - Avoid undocumented resets that erase useful evidence. ### Licensed review - Provide the event pack to the responsible installer. - Have protection, supply, temperature and connections assessed under the applicable process. - Record the confirmed cause rather than a presumed one. ## Solar Insulation or Earth-Leakage Alarm Source: https://wattbench.ai/troubleshooting/solar-insulation-earth-leakage-alarm Treat insulation and leakage warnings as safety events, record the conditions and hand over a useful evidence pack. Safety: Do not touch PV connectors, rooftop equipment, DC cabling or exposed metalwork associated with a suspected insulation fault. ### Stop at observation - Record the exact code and whether it appeared during rain, dew or other damp conditions. - Photograph only safely accessible displays and visible damage from a safe position. - Keep people away from damaged or suspect equipment. ### Build the evidence - Record model, array details, first occurrence and recurrence pattern. - Preserve monitoring logs and any manufacturer notification. - Do not clear a persistent alarm simply to restore production. ### Licensed assessment - Escalate to an SAA-accredited solar installer or licensed electrician. - Testing, isolation and fault location belong to the licensed assessment. - Return to service only through the responsible technical process. ## Home Battery Not Discharging Source: https://wattbench.ai/troubleshooting/battery-not-discharging Check reserve, schedules, operating mode, site demand and communications before escalating a battery that remains idle. Safety: Do not open the battery, change installer-only parameters or disconnect battery cabling. Escalate heat, swelling, odour, smoke or damage immediately. ### Check the intended behaviour - Record state of charge, reserve, operating mode and any discharge schedule. - Confirm there is site demand above available solar when discharge is expected. - Check whether a VPP, tariff or backup reserve is controlling the battery. ### Confirm current data - Check app timestamps and battery communications. - Capture power flow and the exact alert or status. - Note recent firmware, tariff or installer changes. ### Escalate - Send screenshots, timestamps and model details to the installer. - Ask for the configured control hierarchy to be confirmed. - Do not bypass reserve or protection settings to force discharge. ## Battery Backup Did Not Operate Source: https://wattbench.ai/troubleshooting/battery-backup-failed Record the outage, essential-load behaviour and battery state needed to assess a backup event. Safety: Do not energise circuits by improvised means, open backup equipment or alter switchboard wiring. Treat damaged, hot or abnormal battery equipment as urgent. ### Reconstruct the event - Record outage start, duration and whether the grid actually failed at the site. - List which essential circuits stayed on, dropped out or cycled. - Capture battery state of charge, reserve and alerts immediately after the event. ### Check expectations - Compare the observed loads with the documented backup circuits and power limits. - Note high-starting-current equipment that attempted to run, and compare its published starting figure with the backup surge rating in the Essential Load Schedule's starting-load check. - Confirm whether backup was enabled and commissioned, without changing installer settings. ### Hand over - Provide the timeline, load list, screenshots and model details to the installer. - Ask for transfer operation, configured limits and commissioning records to be checked. - Keep the incident with the saved job and field report. ## Solar Circuit Repeatedly Tripping Source: https://wattbench.ai/troubleshooting/solar-circuit-nuisance-tripping Capture when a protective device operates and escalate without repeatedly resetting a potentially unsafe circuit. Safety: Repeated operation of a breaker or RCD is a protection event. Do not hold it on, bypass it or repeatedly reset it. ### Record the trip - Identify the labelled device without removing a cover. - Record time, weather, system state and what else was operating. - Capture any inverter or battery alert associated with the event. ### Do not mask the fault - Leave a device off if it will not remain set or trips again. - Do not swap devices, disconnect conductors or bypass protection. - Escalate immediately if there is heat, smell, sound or visible damage. ### Licensed diagnosis - Provide the event pattern and equipment details to a licensed electrician. - Have the circuit, equipment and protection assessed under the applicable test process. - Record the confirmed fault and rectification. ## Export Control or Meter Commissioning Check Source: https://wattbench.ai/troubleshooting/export-control-meter-commissioning A field record for systems that export unexpectedly, remain capped or show implausible power-flow direction. Safety: Metering CTs, switchboards, export-control wiring and installer settings are licensed-worker tasks. Do not change limits without the approved connection details. ### Confirm the approved intent - Record the approved export limit, phase arrangement and controlled equipment. - Capture inverter, meter and controller make, model, firmware and settings as found. - Preserve the connection approval and commissioning record. ### Check the evidence - Compare inverter flow, site meter flow and retailer data as separate measurement sources. - Record import, export, load and generation under clear operating conditions. - Check timestamps and identify any sign or direction mismatch. ### Close the commissioning record - Have CT orientation, phase mapping, communications and approved settings verified. - Record every change and the before-and-after evidence. - Retain the final test record and customer handover. ## Post-Storm Solar System Check Source: https://wattbench.ai/troubleshooting/post-storm-solar-inspection A safe ground-level check after hail, wind, lightning, flooding or debris impact, with clear stop conditions. Safety: Do not climb onto the roof, touch wet or damaged electrical equipment, approach fallen conductors or operate flooded equipment. ### Make the area safe - Keep clear of fallen conductors, damaged modules, loose metalwork and flooded equipment. - Contact emergency or network services where public electrical hazards are present. - Do not rely on a dark display as proof that DC equipment is de-energised. ### Observe from a safe position - Record visible debris, broken glass, movement, water ingress and equipment alerts. - Capture the time, storm type and any outage or surge evidence. - Do not clean, move or reconnect damaged components. ### Arrange assessment - Provide photographs and system details to an SAA-accredited solar installer. - Ask for the required electrical and structural inspection scope to be confirmed. - Keep the inspection findings and rectification evidence with the job. --- # Standards reference Source: https://wattbench.ai/standards Scope only. We do not reproduce the copyrighted standard text or tables. Standards are revised periodically; always work to the current published edition and have a licensed professional confirm compliance. ## Installation & safety - AS/NZS 5033 (Standards Australia / NZ): Installation and safety requirements for photovoltaic (PV) arrays: DC-side layout, isolation, maximum array voltage, earthing and signage. Applies to: The DC side of every grid-connected and off-grid PV array. - AS/NZS 4777.1 (Standards Australia / NZ): Installation requirements for grid-connected energy systems via inverters. Applies to: How inverter-connected grid systems are installed. - AS/NZS 3000 (Standards Australia / NZ): The Wiring Rules: the overarching standard for the safety of electrical installations. Applies to: All electrical work, including the AC side of solar. ## Grid connection & inverters - AS/NZS 4777.2 (Standards Australia / NZ): Inverter requirements for grid connection: anti-islanding, power quality, and voltage/frequency response, including the regional settings inverters ship with. Applies to: Grid-connected solar and battery inverters. - IEC 62109 (Parts 1 & 2) (IEC): Safety of power converters for use in photovoltaic power systems: electrical safety of the inverter as a product. Applies to: Inverter product-level electrical safety. ## Cabling & protection - AS/NZS 3008.1 (Standards Australia / NZ): Selection of cables: current-carrying capacity (ampacity) and voltage-drop sizing for conductors. Applies to: Sizing DC string and AC cabling. ## Batteries - AS/NZS 5139 (Standards Australia / NZ): Safety of battery systems used with power conversion equipment: installation, location, and protection of battery energy storage. Applies to: Home and commercial battery storage installs. ## Product qualification (modules) - IEC 61215 (IEC): Design qualification and type approval for crystalline-silicon terrestrial PV modules: performance and durability testing. Applies to: PV module performance certification. - IEC 61730 (Parts 1 & 2) (IEC): Photovoltaic module safety qualification: construction requirements and safety testing. Applies to: PV module safety certification. ## Commissioning & off-grid - IEC 62446-1 (IEC): Requirements for testing, documentation and maintenance of grid-connected PV systems: commissioning tests and handover documentation. Applies to: Commissioning and handover of grid-connected systems. - AS/NZS 3017 (Standards Australia / NZ): Electrical installations: verification by inspection and testing. The inspection and test methods that show a low voltage installation meets the safety requirements against fire and electric shock, for installations on the MEN earthing system. Applies to: Verifying low voltage electrical installations, including the AC side of solar and battery work. - AS/NZS 4509 (Standards Australia / NZ): Stand-alone power systems: design and installation of off-grid systems. Applies to: Off-grid (stand-alone) power systems. --- # Network connection authorities Source: https://wattbench.ai/network-authorities Official distributor links for connection applications and live technical requirements. Confirm the site's distributor from the bill, NMI record or connection approval. Wattbench does not reproduce export limits or approved settings; the site-specific connection approval overrides general web guidance. Embedded networks, remote grids and private networks may use another authority. Content reviewed: 2026-09-28 Source links checked: 2026-09-28 - ACT, Evoenergy: https://www.evoenergy.com.au/Connections/Solar-and-batteries/Distributed-Energy-Resource-Portal (source ID: network-evoenergy-connections) - NSW, Ausgrid: https://www.ausgrid.com.au/connections/connection-application-help/solar-support/connecting-solar-or-small-generation (source ID: network-ausgrid-connections) - NSW, Endeavour Energy: https://www.endeavourenergy.com.au/Working-with-us/Providers/Solar-installers (source ID: network-endeavour-energy-connections) - NSW, Essential Energy: https://www.essentialenergy.com.au/at-home/micro-embedded-generation (source ID: network-essential-energy-connections) - NT, Power and Water Corporation: https://www.powerwater.com.au/developers/power/power-connections/basic-connection (source ID: network-power-and-water-connections) - QLD, Energex: https://www.energex.com.au/our-services/connections/residential-and-commercial-connections/solar-connections-and-other-technologies/how-to-connect-homeowners-and-small-businesses (source ID: network-energex-connections) - QLD, Ergon Energy Network: https://www.ergon.com.au/network/our-services/connections/residential-and-commercial-connections/solar-connections-and-other-technologies/how-to-connect-homeowners-and-small-businesses (source ID: network-ergon-energy-network-connections) - SA, SA Power Networks: https://www.sapowernetworks.com.au/connections/connect-solar-and-ev-chargers/ (source ID: network-sa-power-networks-connections) - TAS, TasNetworks: https://www.tasnetworks.com.au/embedded-generation (source ID: network-tasnetworks-connections) - VIC, AusNet Services: https://www.ausnetservices.com.au/renewables/industry-solar/make-and-manage-a-solar-application (source ID: network-ausnet-services-connections) - VIC, CitiPower: https://www.citipower.com.au/services/connecting-to-the-electricity-network (source ID: network-citipower-connections) - VIC, Jemena: https://www.jemena.com.au/electricity/solar-connections/ (source ID: network-jemena-connections) - VIC, Powercor: https://www.powercor.com.au/services/connecting-to-the-electricity-network (source ID: network-powercor-connections) - VIC, United Energy: https://www.unitedenergy.com.au/help-support/online-connection-application-service-supporting-documents (source ID: network-united-energy-connections) - WA, Western Power: https://www.westernpower.com.au/products-services/install-something-new/connect-my-solar-battery-or-electric-vehicle/inverter-system-up-to-30kva/ (source ID: network-western-power-connections) - WA, Horizon Power: https://www.horizonpower.com.au/contractors-installers/connect-solar-battery-ev/ (source ID: network-horizon-power-connections) --- # Glossary Source: https://wattbench.ai/glossary ## Panels ### Standard Test Conditions (STC) The reference conditions used for PV module nameplate ratings: 1000 W/m² irradiance, 25 °C cell temperature and an AM1.5 solar spectrum. STC supports comparison on a common basis; it is not a forecast of output on a particular roof. Evidence IDs: nrel-pv-dc-systems, iec-61215-1 Last reviewed: 2026-08-03 ### NOCT / NMOT (Nominal Operating Cell Temperature) A manufacturer-declared operating-temperature result measured under stated irradiance, ambient temperature, wind and mounting conditions. It is useful for comparison, but the printed test method and conditions must be read from the exact datasheet rather than treated as a site forecast. Evidence IDs: nrel-pv-dc-systems, iec-61215-1 Last reviewed: 2026-08-03 ### Temperature coefficient of Pmax How much a panel's maximum power changes per degree Celsius of cell temperature relative to the datasheet reference, expressed in %/°C. Power normally falls as cells heat up. Use the exact model's published coefficient rather than a generic value for its cell technology. Evidence IDs: nrel-pv-dc-systems, iec-61215-1 Last reviewed: 2026-08-03 ### Temperature coefficient of Voc How much a panel's open-circuit voltage changes per degree Celsius relative to 25 °C, in %/°C. Voltage rises as cells get colder, so on a frosty morning Voc can climb above its rated value. Installers use this to ensure a cold-weather string never exceeds the inverter's maximum input voltage. Evidence IDs: nrel-pv-dc-systems, as-nzs-5033 Last reviewed: 2026-08-03 ### Light-Induced Degradation (LID) A change in crystalline-silicon module performance associated with initial light exposure. The mechanism and magnitude depend on the cell materials and processing, so use product-specific qualification and warranty evidence rather than assigning a technology-wide loss. Evidence IDs: iea-pvps-degradation, doe-crystalline-pv, iec-61215-2 Last reviewed: 2026-08-03 ### Potential-Induced Degradation (PID) A module-degradation mechanism associated with electrical potential between the cell circuit and other module or system parts. Susceptibility depends on module construction, system configuration and environmental conditions; use exact qualification and diagnostic evidence rather than assuming PID from low output alone. Evidence IDs: iea-pvps-degradation, nrel-bifacial-modules, iec-61215-2 Last reviewed: 2026-08-03 ### Bifaciality factor For a bifacial module, a declared ratio comparing rear-side and front-side response under the stated test basis. It is not a site-yield forecast: rear irradiance, mounting, albedo, shading and mismatch determine the installed rear-side contribution. Evidence IDs: iea-pvps-bifacial, nrel-bifacial-modules Last reviewed: 2026-08-03 ### Module efficiency The share of incident solar power a whole module converts to electrical power under its stated rating conditions. Higher efficiency means more rated watts can fit into the same module area; compare exact models on the same test basis. Evidence IDs: nrel-pv-dc-systems Last reviewed: 2026-08-03 ### Power tolerance How far an individual panel's actual power may vary from its nameplate rating. A positive-only tolerance (e.g. 0/+5 W) guarantees you never get less than the label; a ± tolerance means some panels ship under-rated. Evidence IDs: nrel-pv-dc-systems Last reviewed: 2026-08-03 ### PERC Passivated Emitter and Rear Cell: a crystalline-silicon cell architecture with rear-surface passivation intended to reduce recombination and improve light capture. The acronym does not establish a finished module's efficiency, degradation or warranty. Evidence IDs: doe-crystalline-pv Last reviewed: 2026-08-03 ### TOPCon Tunnel Oxide Passivated Contact: a silicon-cell contact architecture using an ultra-thin oxide and doped silicon layer to reduce recombination at the contact. It does not by itself establish a module's efficiency, temperature behaviour, degradation or warranty. Evidence IDs: fraunhofer-topcon, nrel-bifacial-modules Last reviewed: 2026-08-03 ### HJT (Heterojunction) Heterojunction Technology: a cell architecture combining crystalline silicon with thin amorphous-silicon layers for surface passivation. Compare finished modules using their exact datasheets and warranties rather than carrying generic HJT performance figures into a design. Evidence IDs: doe-crystalline-pv, nrel-bifacial-modules Last reviewed: 2026-08-03 ### Busbars The thin conductive lines on a cell's surface that collect the current the fine gridlines gather and carry it to the cell interconnects. More, thinner busbars (multi-busbar / MBB designs) shorten the path current travels, reducing resistive losses and shading. Evidence IDs: pveducation-metal-grid, doe-crystalline-pv Last reviewed: 2026-08-03 ## Inverters ### Maximum Power Point Tracking (MPPT) A control technique in inverters and charge controllers that continuously adjusts the array's operating voltage and current to keep it at the point that yields the most power as irradiance, temperature, and shading change. Multiple independent MPPT inputs let different roof faces or string lengths be optimised separately. Evidence IDs: nrel-pv-dc-systems, pveducation-inverters Last reviewed: 2026-08-03 ### String inverter An inverter that converts the combined DC output of one or more series-connected PV strings into AC. Panels on a shared input operate within the inverter's MPPT arrangement, so string layout, mismatch and shading must be assessed for the exact design. Evidence IDs: aus-solar-glossary, doe-inverter-basics Last reviewed: 2026-08-03 ### Microinverter An inverter installed at an individual PV module that converts that module's DC output to AC. This provides module-level conversion; monitoring, shutdown, backup and fault behaviour depend on the complete product and system design. Evidence IDs: aus-solar-glossary, doe-inverter-basics Last reviewed: 2026-08-03 ### Power optimiser A module-level DC-DC power-electronics device used to condition a panel's output before a central inverter. Its operating, monitoring and compatibility requirements depend on the exact optimiser, module and inverter combination. Evidence IDs: aus-solar-glossary Last reviewed: 2026-08-03 ### Hybrid inverter An inverter that combines solar-inverter and battery-inverter or charger functions. Backup capability is product- and design-specific, so the hybrid label alone does not establish what loads can operate during a grid outage. Evidence IDs: aus-solar-glossary, aus-solar-batteries Last reviewed: 2026-08-03 ### Inverter clipping When available array power is above the inverter's conversion or output limit, the inverter caps output and the excess is not delivered. The expected frequency and energy impact depend on the DC-to-AC ratio, site conditions and exact inverter behaviour. Evidence IDs: nrel-ac-dc-translation, sandia-inverter-clipping Last reviewed: 2026-08-03 ### DC-to-AC ratio (inverter loading ratio) The ratio of an array's rated DC power to the inverter's rated AC output. A higher ratio can increase inverter utilisation and clipping; the suitable value depends on the exact equipment limits, site conditions and design requirements. Evidence IDs: nrel-ac-dc-translation, aus-solar-size, sandia-inverter-clipping Last reviewed: 2026-08-03 ### CEC / weighted inverter efficiency An inverter-efficiency metric calculated from performance at several load points using a defined weighting, rather than the single best conversion point. Compare values only when they use the same published method and test boundary. Evidence IDs: sandia-cec-inverter-protocol Last reviewed: 2026-08-03 ## Batteries ### Depth of Discharge (DoD) The percentage of a battery's total capacity that is drawn down from full. The maximum recommended DoD sets how much of the rated capacity is actually usable: e.g. a 10 kWh battery rated to 90% DoD gives 9 kWh. Shallower discharges generally extend cycle life. Evidence IDs: nrel-battery-lifetime, aus-solar-batteries Last reviewed: 2026-08-03 ### Usable capacity The energy a battery actually delivers in normal use, in kWh: its total (nominal) capacity multiplied by the allowed depth of discharge. This, not the nameplate capacity, is the number that matters for sizing how much of your home it can run. Evidence IDs: aus-solar-batteries Last reviewed: 2026-08-03 ### Round-trip efficiency The share of energy put into a battery system that can be delivered again after charging and discharging losses, expressed as a percentage. Compare exact products on the same test boundary because some figures include power-conversion losses and others do not. Evidence IDs: aus-solar-batteries Last reviewed: 2026-08-03 ### LiFePO4 (LFP) Lithium iron phosphate: a lithium-ion cathode chemistry widely used in stationary storage. Chemistry changes cell-level thermal and energy-density trade-offs, but it does not by itself establish a finished battery system's safety, service life or suitability. Evidence IDs: battery-chemistry-study, aus-solar-batteries Last reviewed: 2026-08-03 ### Cycle life The number of charge-discharge cycles completed before capacity reaches a stated test threshold. It depends on the test method, chemistry, depth of discharge, temperature and operating limits; compare the warranty's years, throughput and retained-capacity terms as well as any cycle figure. Evidence IDs: nrel-battery-lifetime, aus-solar-batteries Last reviewed: 2026-08-03 ### C-rate A measure of how fast a battery charges or discharges relative to its capacity: 1C means full capacity delivered in one hour, 0.5C in two hours. It links a battery's energy (kWh) to its continuous power (kW) capability. Evidence IDs: nrel-battery-lifetime Last reviewed: 2026-08-03 ### State of Charge (SoC) An estimate of the charge currently available in a battery, usually expressed as a percentage under the battery-management system's defined operating window. The displayed value and usable reserve depend on the product's controls and settings. Evidence IDs: nrel-battery-lifetime, aus-solar-batteries Last reviewed: 2026-08-03 ## Electrical ### Open-circuit voltage (Voc) The voltage measured across a PV module or string with its circuit open under the stated conditions. Because voltage changes with cell temperature, string design applies the exact Voc coefficient and site design temperature against every applicable equipment and system limit. Evidence IDs: nrel-pv-dc-systems, as-nzs-5033 Last reviewed: 2026-08-03 ### Short-circuit current (Isc) The current measured when a PV device's output terminals are short-circuited under stated conditions. Design current checks apply the exact module value and the factors required for irradiance, bifacial contribution and the applicable rules. Evidence IDs: nrel-pv-dc-systems, as-nzs-5033 Last reviewed: 2026-08-03 ### Maximum power point (Vmp / Imp) The voltage (Vmp) and current (Imp) at which a panel delivers its greatest power under given conditions; their product is the rated power. MPPT keeps the array operating at this point as conditions shift. Evidence IDs: nrel-pv-dc-systems Last reviewed: 2026-08-03 ### Maximum system voltage The highest DC system voltage for which a module is rated under its stated certification. It is one limit in string design; the calculation must also respect the inverter, connected equipment and applicable installation requirements under cold conditions. Evidence IDs: nrel-pv-dc-systems, as-nzs-5033 Last reviewed: 2026-08-03 ### Maximum series fuse rating The largest overcurrent-protection fuse rating a panel is rated to tolerate, used to protect parallel strings from reverse fault current. It is a key input when an installer designs string combiner and fusing. Evidence IDs: nrel-pv-dc-systems, as-nzs-5033 Last reviewed: 2026-08-03 ### MC4 connector A named family of locking DC connectors used in PV wiring. Similar appearance does not establish mating compatibility: follow the exact connector manufacturer, type, tooling and installation requirements recorded for the system. Evidence IDs: nrel-pv-dc-systems, as-nzs-5033 Last reviewed: 2026-08-03 ### Rapid shutdown A safety function designed to reduce voltage in specified PV conductors when triggered. Requirements and permitted implementations vary by jurisdiction and system, so the term is not a substitute for the applicable rules and equipment instructions. Evidence IDs: nrel-pv-dc-systems Last reviewed: 2026-08-03 ## System & Install ### Tilt and azimuth Tilt is the angle of a panel from horizontal; azimuth is the compass direction it faces. Together with location, shading and horizon conditions they shape when and how much sunlight the array receives. In Australia, north-facing exposure often favours annual yield when other constraints are equal. Evidence IDs: aus-solar-design Last reviewed: 2026-08-03 ### IP rating Ingress Protection rating: an IEC classification for an enclosure's protection against access, solid objects and water. The two characteristic numerals address different hazards; read the exact rating and test conditions rather than translating it into a general outdoor-suitability claim. Evidence IDs: iec-60529 Last reviewed: 2026-08-03 ### Mechanical load rating A declared pressure a module has been qualified against under stated test and mounting conditions, commonly reported separately for front and rear loading. Use the exact installation manual, approved mounting zones and site structural design rather than the headline pressure alone. Evidence IDs: iec-61215-1, iec-61215-2 Last reviewed: 2026-08-03 ### Glass-glass (dual-glass) module A PV module constructed with glass on both front and rear instead of a polymer backsheet. The construction may be used for monofacial or bifacial products; mass, load rating, mounting, electrical data and warranty remain exact-model questions. Evidence IDs: iea-pvps-bifacial, nrel-bifacial-modules Last reviewed: 2026-08-03 ### IEC 61215 The international design-qualification and type-approval series for terrestrial PV modules. It specifies qualification requirements and test procedures; passing it is not a performance ranking or proof that a module suits a particular site. Evidence IDs: iec-61215-1, iec-61215-2 Last reviewed: 2026-08-03 ### IEC 61730 The international PV-module safety-qualification series. Part 1 covers construction requirements and Part 2 covers testing; qualification is not a substitute for current product-list status or a site-specific compliant design. Evidence IDs: iec-61730-1, iec-61730-2 Last reviewed: 2026-08-03 ## Performance ### Annual degradation A stated or measured year-to-year change in module output. Manufacturer warranty curves may separate an initial allowance from later annual allowances; use the exact product document and its conditions rather than a generic technology rate. Evidence IDs: iea-pvps-degradation, nrel-pv-performance, solar-victoria-warranties Last reviewed: 2026-08-03 ### Performance (power) warranty A manufacturer's promise about a module's output floor over a stated period and under stated conditions. It is separate from the product warranty, and its exclusions, test method and remedy matter as much as the headline duration. Evidence IDs: solar-victoria-warranties Last reviewed: 2026-08-03 ### Product (workmanship) warranty The warranty covering defined defects in the module itself, distinct from the performance warranty. Read the exact coverage, exclusions, claim process and responsibility for labour, freight, removal and reinstallation. Evidence IDs: solar-victoria-warranties Last reviewed: 2026-08-03 ### Performance ratio (PR) A normalised PV-system performance metric, commonly calculated as final yield divided by reference yield under a declared method. It reflects multiple system and environmental effects, so the calculation basis must be stated before two results are compared. Evidence IDs: nrel-pv-performance Last reviewed: 2026-08-03 ### Specific yield Annual energy produced per unit of installed capacity, in kWh per kWp per year. It normalises output by system size, making it the fair way to compare productivity across systems and locations. Evidence IDs: nrel-pv-performance Last reviewed: 2026-08-03 ### Capacity factor The ratio of actual energy output over a period to the energy that would have been produced at the selected rated capacity for every hour in that period. State whether the denominator uses DC or AC capacity when comparing PV results. Evidence IDs: nrel-ac-dc-translation, fraunhofer-ise-capacity-factor, eia-capacity-factor Last reviewed: 2026-08-03 ### Soiling loss The output lost when dust, dirt, pollen, bird droppings, or snow accumulate on panel glass and block light. It varies by climate and tilt and is recovered by rain or cleaning; it is one of the loss terms a performance ratio captures. Evidence IDs: iea-pvps-soiling, nrel-pv-performance Last reviewed: 2026-08-03 ## Grid & Market ### Feed-in tariff (FiT) The rate an electricity retailer or programme pays or credits for eligible solar energy exported to the grid, usually stated in cents per kilowatt-hour. The current rate and conditions come from the live electricity plan. Evidence IDs: aus-solar-glossary, aus-solar-payback Last reviewed: 2026-08-03 ### Net metering A metering arrangement that records the balance between electricity imported from and exported to the grid under the applicable billing rules. It is distinct from gross metering, which records all generation as export. Evidence IDs: aus-solar-glossary Last reviewed: 2026-08-03 ### Frequency Control Ancillary Services (FCAS) Services procured through Australia's National Electricity Market to help keep power-system frequency within the required operating bands. Different FCAS markets have distinct response and enablement requirements; battery participation depends on registration, control and market arrangements. Evidence IDs: aemo-fcas-guide Last reviewed: 2026-08-03 ### Virtual power plant (VPP) A group of batteries and sometimes other customer devices coordinated through software and communications. Eligibility, control rights, reserve behaviour and customer benefit are defined by the live programme and contract. Evidence IDs: aus-solar-glossary, aus-solar-batteries Last reviewed: 2026-08-03 ### Time-of-use (TOU) tariff An electricity tariff with different rates for defined time periods such as peak, shoulder and off-peak. Assess solar, battery and load-shifting value against the current plan's actual periods, rates and conditions. Evidence IDs: aus-solar-glossary, aus-solar-payback Last reviewed: 2026-08-03 ### Self-consumption Solar electricity used within the property rather than exported to the grid. Its bill value depends on when it offsets imports and on the current retail and feed-in tariff conditions. Evidence IDs: aus-solar-glossary, aus-solar-payback Last reviewed: 2026-08-03 ### Curtailment The deliberate reduction of a system's output below the power otherwise available, including inverter control used to meet an export limit. The cause and control authority must be established from the site's settings, connection requirements and event evidence. Evidence IDs: aus-solar-glossary, aus-solar-payback, western-power-der Last reviewed: 2026-08-03