Power stage set problem

What does 437 mean?

A problem has been detected within the inverter's power stage set, which is responsible for the actual power conversion and grid interaction. This indicates a malfunction in the high-power section of the device.

• Failure of power semiconductor components (e.g., IGBTs, MOSFETs)
• Fault in the power stage control circuitry
• Damage to the power stage module

Click steps to track your progress.

1. 1

   If this status code is displayed all the time, notify a Fronius-trained service engineer.