Growatt · PV inverters · Growatt MIN TL-XE / TL-X (single-phase grid inverter, 2.5–6 kW)
Error: 407Auto Test Failed
Name in the manufacturer's documentation (user manual): Auto Test Failed
[1]
In plain words (editorial)
The automatic self-test (Auto Test) did not pass. The manual says to restart the inverter and repeat the Auto Test.
When to call a service technician: If the problem still exists, contact your installer or Growatt.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
For technicians
Detection conditions (source text)
- Auto test didn't pass[2]
Steps given by the manufacturer (source text)
- Restart inverter, repeat Auto Test, if problem still exist, contact Growatt[3]
⚠ 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 – MIN 2500–6000TL-XE/X (044.0098100, ed. 2022-05) (044.0098100) , p. 23 official manufacturer document quote verified
Auto Test Failed Error: 407
- [2] Installation & Operation Manual – MIN 2500–6000TL-XE/X (044.0098100, ed. 2022-05) (044.0098100) , p. 23 official manufacturer document quote verified
auto test didn't pass
- [3] Installation & Operation Manual – MIN 2500–6000TL-XE/X (044.0098100, ed. 2022-05) (044.0098100) , p. 23 official manufacturer document quote verified
1.restart inverter, repeat auto test, if