Sol-Ark › PV MPPT inputs and PV DC disconnect

Inverter shows F63 arc fault

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

The inverter logs F63 Arc_Fault and stops the PV input

Alerts and codes

F63

The cause and the fix

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Manufacturer documents

15K Installation Manual Rev 13 16July2026