Communication error between the processors

What does 452 mean?

A failure has occurred in the internal communication links between the inverter's multiple processors. This prevents coordinated operation and can lead to system malfunction.

• Internal communication bus interruption or error
• Malfunction of a processor or communication interface

Click steps to track your progress.

1. 1

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