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245

245 Arc detector self test failed - Safety system unable to test itself.

Fronius · Primo Solar Inverter

What does 245 mean?

The inverter's internal arc detector failed its self-test and has disconnected from the grid. This requires an AC reset to re-attempt the test.

Common Causes

  • The inverter's arc fault detection system failed its internal diagnostic test.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Perform an AC reset by switching the automatic circuit breaker for the inverter off and then on again.

  2. 2

    The inverter will automatically repeat the arc detector self-test.

  3. 3

    If status code 245 reappears, contact a Fronius-trained service technician.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

240240 Arc detected - Brief detection of an electrical arc.241241 Arc detected - Inverter disconnected due to a confirmed arc.242242 Arc detected - Inverter resuming operation after arc reset.
Source: Fronius Primo Solar Inverter
Open Manual (Page 44)Search more codes in this manual