GoodWe · PV inverters · GoodWe ET G2 6–15 kW (three-phase hybrid inverter)
F45Grid Voltage Imbalance
Name in the manufacturer's documentation (user manual): Grid Voltage Imbalance
[1]
In plain words (editorial)
The grid phase voltages differ too much (voltage imbalance). If it happens only occasionally it is a short-term grid issue: the inverter resumes normal operation on its own once the grid is normal again, without manual intervention.
When to call a service technician: If it happens frequently, contact your installer – the grid values may need to be checked with the local power operator; protection settings are changed only with the operator's approval.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
For technicians
Possible causes (source text)
- Excessive difference in grid phase voltages.[2]
Steps given by the manufacturer (source text)
- If it occurs occasionally, it may be caused by a short-term grid abnormality. The inverter will resume normal operation after detecting that the grid is normal, and no manual intervention is required.[3]
- If it occurs frequently, check whether the grid voltage and frequency are within the allowable range and stable. If not, contact your local power operator.[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 Residential Smart Inverter Solutions – ET G2 6-15K (+ LX F / LX D) – User Manual V2.2 (2026-09-30) (V2.2-2026-09-30) , p. 208 official manufacturer document quote verified
- [2] GoodWe Residential Smart Inverter Solutions – ET G2 6-15K (+ LX F / LX D) – User Manual V2.2 (2026-09-30) (V2.2-2026-09-30) , p. 208 official manufacturer document quote verified
Excessive difference in grid phase voltages
- [3] GoodWe Residential Smart Inverter Solutions – ET G2 6-15K (+ LX F / LX D) – User Manual V2.2 (2026-09-30) (V2.2-2026-09-30) , p. 208 official manufacturer document quote verified
If it occurs occasionally, it may be caused by a short-term grid abnormality. The inverter will resume normal operation after detecting that the grid is normal, and no manual intervention is required
- [4] GoodWe Residential Smart Inverter Solutions – ET G2 6-15K (+ LX F / LX D) – User Manual V2.2 (2026-09-30) (V2.2-2026-09-30) , p. 208 official manufacturer document quote verified
If it occurs frequently, check whether the grid voltage and frequency are within the allowable range and stable. If not, contact your local power operator