249 Arc detector defective - Arc detection system faulty.

What does 249 mean?

The arc detector itself is reported as defective. The inverter may disconnect from the grid. This indicates a problem with the safety monitoring system.

• The arc detection hardware within the inverter has an internal fault.

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

   Check if the status code 249 clears and the inverter resumes normal operation.

3. 3

   If the status code persists, contact a Fronius-trained service technician.