Growatt · PV inverters · Growatt MOD TL3-X (three-phase grid inverter, 3–15 kW)
Error 300AC V Outrange
Name in the manufacturer's documentation (user manual): AC V Outrange
[1]
In plain words (editorial)
The grid voltage is outside the range the inverter accepts, so it disconnects. The manual says to check the grid voltage.
When to call a service technician: If the error stays although the grid voltage is within range, contact the manufacturer.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
For technicians
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] Installation & Operation Manual – MOD 3–15KTL3-X (GR-UM-212-A-05, AU ed. 2021-12) (GR-UM-212-A-05) , p. 27 official manufacturer document quote verified
Error 300 AC V Outrange
- [2] Installation & Operation Manual – MOD 3–15KTL3-X (GR-UM-212-A-05, AU ed. 2021-12) (GR-UM-212-A-05) , p. 27 official manufacturer document quote verified
Check grid voltage
- [3] Installation & Operation Manual – MOD 3–15KTL3-X (GR-UM-212-A-05, AU ed. 2021-12) (GR-UM-212-A-05) , p. 27 official manufacturer document quote verified
If the error message still exists despite the grid voltage being within the tolerable range, contact manufacturer