GoodWe · PV inverters · GoodWe ET 5–10 kW (three-phase hybrid inverter)
Ground FailureGround Failure
Name in the manufacturer's documentation (user manual): Ground Failure
[1]
In plain words (editorial)
Ground failure – the manual names a poorly connected neutral cable on the AC side. If it happens only in the early morning or on humid, rainy days and recovers soon, the manual says it should be normal.
When to call a service technician: If it persists, have your installer check the AC-side neutral and earth connections.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
For technicians
Possible causes (source text)
- Neutral cable on the AC side is not connected well[2]
Steps given by the manufacturer (source text)
- Check (use multi-meter) if there is voltage (normally close to 0 V) between earth and inverter frame; if so, neutral and ground cables are not connected well on AC side[3]
Notes from the documentation
- If it happens only in early morning / rainy days with higher humidity and recovers soon, it should be normal[4]
⚠ 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. 36 official manufacturer document quote verified
Ground Failure
- [2] GoodWe Hybrid Inverter ET Series | ET Plus Series – User Manual V1.1 (2021-02-10) (V1.1-2021-02-10) , p. 36 official manufacturer document quote verified
the neutral cable on the AC side is not connected well
- [3] GoodWe Hybrid Inverter ET Series | ET Plus Series – User Manual V1.1 (2021-02-10) (V1.1-2021-02-10) , p. 36 official manufacturer document quote verified
the neutral & ground cables are not connected well on the AC side
- [4] GoodWe Hybrid Inverter ET Series | ET Plus Series – User Manual V1.1 (2021-02-10) (V1.1-2021-02-10) , p. 36 official manufacturer document quote verified
rainy days with higher air humidity and is recovered soon, it should be normal