SolaX Inverter Error Codes
Current X1/X3-Hybrid G4 faults with source-linked remedies, kept separate from remedy-blank legacy X-Hybrid C1 and DM9000 entries.
30 of 30 codes
About this fault librarySources · scope
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. 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.
- 30 SolaX Power (X1 / X3 string and hybrid inverters) fault and alarm codes, documented for the trade.
- Compiled from published documentation and field references; Wattbench is independent and not affiliated with SolaX Power (X1 / X3 string and hybrid inverters).
- Codes involving DC/AC isolation, wiring or opening the unit are licensed electrical work. Isolate safely and follow AS/NZS procedure.
Resolution text is manufacturer/service context, not permission for an owner to perform electrical work. Stop at visible observations unless the exact product instructions identify an owner control. Isolation, configuration, testing, opening equipment and wiring are for an appropriately licensed worker and, where required, an SAA-accredited person. Where a card says Product fit is unknown, treat it as brand-level guidance and confirm the exact model, role, regional variant, firmware and current manual before acting.
- Grid Lost Fault
Grid connection lost
The inverter cannot detect an acceptable grid supply and has disconnected.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for Grid Lost Fault: Grid connection lost
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manualSolaX Grid Lost guide
Manufacturer / escalation handoff
- Grid Volt Fault
Grid voltage out of range
The measured grid voltage is outside the inverter's configured protection range.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for Grid Volt Fault: Grid voltage out of range
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- Grid Freq Fault
Grid frequency out of range
The measured grid frequency is outside the inverter's configured protection range.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for Grid Freq Fault: Grid frequency out of range
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- PLL Lost Fault
Grid synchronisation lost
The inverter could not lock onto (synchronise with) the grid's voltage/frequency waveform. SolaX describes this internally as 'the grid is not good'. Usually a symptom of an unstable or poor-quality grid supply rather than a hardware fault.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for PLL Lost Fault: Grid synchronisation lost
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- AC5M Volt Fault / AC10M Volt Fault
Sustained grid voltage out of range (5 / 10 minute average)
The grid voltage averaged over a 5-minute (AC5M) or 10-minute (AC10M) window has exceeded the allowable limit, a longer-term over/under-voltage protection separate from the instantaneous trip.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for AC5M Volt Fault / AC10M Volt Fault: Sustained grid voltage out of range (5 / 10 minute average)
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- Isolation Fault
DC insulation resistance too low
The inverter measured low insulation resistance between the DC circuit and earth.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for Isolation Fault: DC insulation resistance too low
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- RCD Fault
Residual-current fault
The inverter's residual-current monitoring detected leakage current above its protection threshold.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for RCD Fault: Residual-current fault
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- 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.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for PV Volt Fault: PV input voltage out of range
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- PV Config Fault
PV input configuration error
The PV connection/configuration setting (SolaX: 'PV Connection Setting Fault') does not match how the strings are actually wired: for example parallel vs independent MPPT input settings.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for PV Config Fault: PV input configuration error
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- Bus Volt Fault
Internal DC bus voltage out of range
The inverter's internal DC bus voltage is outside its permitted range.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for Bus Volt Fault: Internal DC bus voltage out of range
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- 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.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for Over Temperature Fault: Inverter over temperature (Temp Over Fault)
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- 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.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for Fan Fault / Fan Speed Fault: Cooling fan fault or abnormal fan speed
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- 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.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for Overload Fault: EPS / backup output overloaded
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- 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.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for EPS OCP Fault: Overcurrent in EPS (backup) mode
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- Relay Fault
Grid relay fault
The inverter's internal grid-relay check failed.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for Relay Fault: Grid relay fault
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manualSolaX relay guide
Manufacturer / escalation handoff
- TZ Protect Fault
Hardware overcurrent protection tripped
The inverter's fast hardware overcurrent protection operated.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for TZ Protect Fault: Hardware overcurrent protection tripped
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- Inv OCP Fault
Inverter overcurrent protection
The inverter detected output overcurrent and tripped for protection.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for Inv OCP Fault: Inverter overcurrent protection
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- SW OCP Fault
Software-detected overcurrent
The control system detected overcurrent and stopped conversion.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for SW OCP Fault: Software-detected overcurrent
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- 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.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for DCI / DCI OCP / RC Fault: DC injection (DCI) fault
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- 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.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for CT / Meter Fault: CT clamp or smart meter not detected
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- SPI / SCI Fault
Internal communication fault
Communication between internal inverter control circuits failed.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for SPI / SCI Fault: Internal communication fault
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- CAN1 Fault / C1 CAN Fault
Battery / charger CAN communication fault
The hybrid inverter lost CAN communication with the battery or legacy charger module.
- 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.
- Sample Fault
Detection/sampling circuit fault
An internal measurement (sampling) circuit has returned readings outside expected bounds (SolaX: 'the detection circuit fault'), so the inverter cannot trust its own sensing and has stopped.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for Sample Fault: Detection/sampling circuit fault
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
- 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.
- 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.
- 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.
- C1 Charger OCP / C1 Boost OCP
Charger / boost overcurrent
An overcurrent was detected in the battery charger or its boost stage, tripping protection.
- DM9000 Fault
Legacy DM9000 fault
Legacy X-Hybrid family: the inverter reported a DM9000 internal fault.
- RTC Fault
Real-time clock fault
The inverter reported a fault in its internal real-time clock.
Product fit · Family-level · 2 documented families
Show field stepsHide field steps for RTC Fault: Real-time clock fault
Product fit
X1-Hybrid G4 Series · Single-phase hybrid inverter
Family-level · AU/region not confirmed · Firmware not documented
X3-Hybrid G4 Series · Three-phase hybrid inverter
Family-level · Manual Version 7 · AU/region not confirmed · Firmware not documented
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.
Remedy sourceX1-Hybrid G4 manualX3-Hybrid G4 manual
Manufacturer / escalation handoff
Sources
Continue this work
Did this help you move the job forward?
Frequently asked
- Where do these SolaX fault codes come from?
- Compiled from publicly available SolaX inverter and battery documentation and field references, then rewritten for the trade. Wattbench is independent and not affiliated with SolaX.
- Which of these can I clear on site?
- Some clear on their own once grid or environmental conditions return to normal. Anything involving DC isolation, AC switching, wiring or opening the unit is licensed electrical work. Isolate safely, follow AS/NZS 5033 and AS/NZS 3000 procedure and use appropriate PPE before touching a live system.
- The exact code isn't listed. Why not?
- Firmware and model variants differ, and manufacturers revise their code tables. We document the most common ones; for a variant that isn't here, check the unit's current manual or the manufacturer's service portal.
- How current is this reference?
- This reference was last reviewed on 3 August 2026. We revise entries when the underlying manufacturer documentation changes.
Other fault libraries
Fronius Error Codes
Common Fronius State codes, including the Australian Volt-Watt and Volt-VAr grid-protection states, explained for owners and installers.
30 codesInverter Fault LibrarySMA Error Codes
SMA event-code reference with source-linked remedies for Australian Sunny Tripower X models and explicit boundaries around older Sunny Boy and mixed-family records.
25 codesInverter Fault LibraryFoxESS Inverter Error Codes
FoxESS hybrid and R-series alarms with separate owner-safe checks and source-linked installer remedies.
48 codes