Growatt · PV inverters · Growatt MOD TL3-X (three-phase grid inverter, 3–15 kW)
Warning 402Optimizer and inverter communication is abnormal
Name in the manufacturer's documentation (user manual): Optimizer and inverter communication is abnormal
[1]
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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. 26 official manufacturer document quote verified
Warning 402
- [2] Installation & Operation Manual – MOD 3–15KTL3-X (GR-UM-212-A-05, AU ed. 2021-12) (GR-UM-212-A-05) , p. 26 official manufacturer document quote verified
Check if the optimizer is on
- [3] Installation & Operation Manual – MOD 3–15KTL3-X (GR-UM-212-A-05, AU ed. 2021-12) (GR-UM-212-A-05) , p. 26 official manufacturer document quote verified
Check whether the connection between the optimizer and the inverter is normal