Communication error between Fronius Symo Hybrid and Fronius Solar Battery

What does 978 mean?

A communication error exists between the Fronius Symo Hybrid inverter and the Fronius Solar Battery. This prevents battery operation, but grid feed-in will resume.

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

Click steps to track your progress.

1. 1

   Check the communication wiring between the Fronius Symo Hybrid inverter and the Fronius Solar Battery