Relay and self-test fault codes
34 codes across 10 brands whose manufacturer wording names an output relay, or a self-test or self-check the inverter runs on its own protection.
A family groups codes by the manufacturer's wording. It does not mean the codes share a cause, a trip setting or a fix: the same words can describe different measurements on different hardware, so work each code from its own entry and its manufacturer's document.
Codes by brand
- 117Relay-circuit fault
- Auto Test FailedAuto-test failed
- Error 405 · Relay faultRelay fault
- Error 407 · Auto-test failureAuto-test failure
- Error 425 · AFCI self-test faultAFCI self-test fault
- Error 701 · Off-grid box grid relay failureOff-grid box grid-side relay failure
- Error 702 · Off-grid box generator relay faultOff-grid box generator access relay fault
SolarEdge
7 of 361 codes · open libraryWork it on site
Symptom-led sequences and checks that record the evidence for this kind of alarm. Follow the code's own entry for its documented step.
Standards scope
Scope pages: what each standard covers and where it sits against the others. They do not reproduce the standard, and nothing on this page states what it requires. Work from the current published edition.
How codes are placed here
A code joins only when the manufacturer's own title or description contains one of these terms as whole words. The title decides first; Wattbench's fixes and search keywords are never read. A code that matches no family, or more than one, stays unclassified.
- relay
- RelayChk
- self-test
- self-check
- self-detection
- auto-test
- auto test
- relay test
- RCD test
- isolation test
- iso test
- Tx test
- arc test
- check failure
- check failed
- check abnormal