Sol-Ark › GEN port and two-wire generator start relay

Generator never starts on two-wire signal

manufacturer says

Applies to: 5K-1P-N, 5K-2P-N, 8K-2P-N, 8K-2P-L, 12K (first generation, 2019 to 2021), 12K-2P-N, 12K-2P-LL Limitless, 15K-2P-N, 15K-2P-LV, 18K-2P-N, 18K-2P-LV, 30K-3P-208V, 60K-3P-480V

Symptoms

During a grid-down event the Sol-Ark closes its gen start relay (pins 7 and 8) but the generator does not start
Or Auto Gen-Start simply never works

The cause and the fix

Subscribers see the cause, the fixes that worked and who did them, part numbers and recent prices when a part is involved, and the field reports behind this entry.

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Manufacturer documents

15K Installation Manual Rev 13 16July2026