489 Permanent overvoltage on intermediate circuit capacitor - Persistent internal overvoltage.

What does 489 mean?

This code indicates a persistent overvoltage on the intermediate circuit capacitor (five 479 status codes in a row). The inverter is not feeding any energy into the grid due to this critical internal fault.

• Internal hardware failure.
• Persistent grid overvoltage.
• Component breakdown.

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

   Observe if the status code clears and the inverter resumes operation.

3. 3

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