GoodWe · PV inverters · GoodWe ET G2 6–15 kW (three-phase hybrid inverter)
F09Anti-islanding Protection
Name in the manufacturer's documentation (user manual): Anti-islanding Protection
[1]
In plain words (editorial)
Anti-islanding protection: the grid has been disconnected but the voltage is held up by loads, so the safety rules require the inverter to stop feeding in. 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)
- The grid has been disconnected. The grid voltage is maintained due to the load. According to safety regulation Protection requirements, stop grid connection.[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 frequency is within the allowable range. 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
The grid has been disconnected. The grid voltage is maintained due to the load. According to safety regulation Protection requirements, stop grid connection
- [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 frequency is within the allowable range. If not, contact your local power operator