431 Software problem - Inverter software issue preventing power feed.

What does 431 mean?

The inverter has encountered a software problem and is unable to feed energy into the grid. This usually requires a reset and potentially a firmware update.

• Internal software error.
• Corrupted firmware.
• Software incompatibility.

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

   If the issue persists, update the inverter firmware using a USB stick.

3. 3

   If the status code still persists after these steps, contact a Fronius-trained service technician.