GoodWe · PV inverters · GoodWe ET 5–10 kW (three-phase hybrid inverter)
Relay Check FailureSelf checking of relay failure
Name in the manufacturer's documentation (user manual): Self checking of relay failure
[1]
In plain words (editorial)
The inverter's relay self-check failed – the manual names poorly connected neutral and ground cables on the AC side, or an occasional failure.
When to call a service technician: If it persists after a restart, have your installer check the AC-side neutral and ground connections.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
For technicians
Possible causes (source text)
- Neutral & ground cables are not connected well on AC side or just an occasional failure[2]
Steps given by the manufacturer (source text)
⚠ Work on refrigerant circuits, mains electricity and PV DC wiring is for qualified technicians only.
The Polish page has more detail (plain-language explanation, safe checks, guides): Read in Polish →
Sources
Every statement has a footnote to the document and PDF page. “Quote verified” means the quote was found automatically in the text of that page.
- [1] GoodWe Hybrid Inverter ET Series | ET Plus Series – User Manual V1.1 (2021-02-10) (V1.1-2021-02-10) , p. 37 official manufacturer document quote verified
Relay Check Failure
- [2] GoodWe Hybrid Inverter ET Series | ET Plus Series – User Manual V1.1 (2021-02-10) (V1.1-2021-02-10) , p. 37 official manufacturer document quote verified
neutral & ground
- [3] GoodWe Hybrid Inverter ET Series | ET Plus Series – User Manual V1.1 (2021-02-10) (V1.1-2021-02-10) , p. 37 official manufacturer document quote verified
high voltage (normally should be
- [4] GoodWe Hybrid Inverter ET Series | ET Plus Series – User Manual V1.1 (2021-02-10) (V1.1-2021-02-10) , p. 37 official manufacturer document quote verified
is higher than 10v, it means the