437 Power module problem - Issue with an internal power module.

What does 437 mean?

This indicates a problem with one of the inverter's internal power modules. The inverter may not feed energy into the grid due to this internal hardware fault.

• Faulty power module.
• Internal component failure.

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 inverter attempts to reconnect and the code clears.

3. 3

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