GoodWe · PV inverters · GoodWe ET G2 6–15 kW (three-phase hybrid inverter)
F10LVRT Undervoltage Fault
Name in the manufacturer's documentation (user manual): LVRT Undervoltage Fault
[1]
In plain words (editorial)
The grid voltage stayed abnormal longer than the time allowed for low/high voltage ride-through. 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)
- Grid Abnormal: The duration of Grid Voltage Abnormal exceeds the time specified for high/low voltage ride-through.[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. 193 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. 193 official manufacturer document quote verified
Grid Abnormal: The duration of Grid Voltage Abnormal exceeds the time specified for high/low voltage ride-through
- [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. 193 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. 193 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