Compatibility error (e.g. due to replacement of a PC board) / Invalid power stage set configuration

What does 445 mean?

A compatibility issue has arisen, often after replacing a PC board, resulting in an invalid configuration of the power stage set. This prevents the inverter from feeding energy into the grid.

• Installation of an incorrect or incompatible replacement PC board
• Incorrect configuration parameters for the power stage set
• Firmware mismatch after component replacement

Click steps to track your progress.

1. 1

   Update inverter firmware to the latest version.

2. 2

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