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

What does 445 mean?

This code indicates a compatibility error, possibly due to a replaced PC board, or an invalid configuration of the power stage set. Either issue prevents the inverter from feeding energy into the grid, requiring a firmware update or configuration check.

• Installation of an incompatible PC board.
• Incorrect configuration parameters for the power stage set.
• Firmware mismatch with the installed hardware components or configuration.

Click steps to track your progress.

1. 1

   Update the inverter firmware to the latest compatible version.

2. 2

   If PC boards were recently replaced, verify they are the correct models for the inverter.

3. 3

   Check the power stage set configuration parameters for validity and correct them if necessary.

4. 4

   If the status code is displayed continuously, notify a Fronius-trained service engineer.