Sol-Ark › PV MPPT inputs and PV DC disconnect

DC LED stays off, PV reads zero volts

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

Panels are connected but the DC LED does not come on and the system measures 0 V PV even with the PV DC disconnect ON
The 30K/60K tables and the Deye F01 video tie F1 / F01 to reversed PV polarity

Alerts and codes

F1DC LED indicator not on with panels connected

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
30K 3P 208V Installation Manual Ma 00027 Rev6 25Au