Communication error between Fronius Symo Hybrid and Fronius Solar Battery

What does 979 mean?

A communication error exists between the Fronius Symo Hybrid inverter and the Fronius Solar Battery. Battery operation is not possible, and grid feed-in resumes. This code is displayed if not in standby mode.

• Loose or damaged communication wiring between the inverter and battery
• Faulty communication interface on either device

Click steps to track your progress.

1. 1

   If the system is not in standby mode, check the communication wiring between the Fronius Symo Hybrid inverter and the Fronius Solar Battery