How do I fix DC1 Average Overcurrent (Alarm 1025) on a Solis?

Check the strings on MPPT 1 for faults and polarity. Then: Remove strings one at a time to isolate the faulty one, then restart.

Solis

OV-DCA-I

DC1 Average Overcurrent (Alarm 1025)

Average overcurrent on MPPT 1.

Common causes

String fault or polarity issueInternal fault

What to check

STEP 1

Check the strings on MPPT 1 for faults and polarity.

STEP 2

Remove strings one at a time to isolate the faulty one, then restart.

Escalate if

Strings healthy but alarm persists

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