485 CAN transmission buffer is full - Internal communication buffer overload.

What does 485 mean?

The internal CAN communication buffer is full, indicating a potential overload or issue with internal data transmission. This prevents the inverter from feeding energy into the grid.

• High internal communication load.
• Software glitch.
• A hardware issue with the CAN bus.

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

   Observe if the inverter attempts to restart and the code clears.

3. 3

   If this status code persists, contact a Fronius-trained service technician.