No communication possible between power stage set and control system.

What does 416 mean?

This code indicates a failure in communication between the inverter's power stage set and its control system. This prevents normal operation, but the inverter will automatically attempt to re-establish communication and resume feeding energy into the grid.

• Faulty communication link (e.g., ribbon cable, bus connection) between the power and control boards.
• Malfunction of communication transceivers on either the power stage or control system.
• Electromagnetic interference disrupting the communication channel.

Click steps to track your progress.

1. 1

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

2. 2

   Perform an AC reset by cycling the automatic circuit breaker to restart the inverter's internal communication.

3. 3

   Inspect internal communication cables for damage or loose connections.