Fronius Symo Hybrid Inverter Code 108 — Stand-alone operation detected

What does 108 mean?

The inverter has detected conditions that indicate it is operating in stand-alone mode, separate from the main AC grid. It will temporarily disconnect and resume feeding energy once grid conditions are restored.

• Grid instability mimicking stand-alone operation
• Faulty grid monitoring
• Islanding condition detected

Click steps to track your progress.

1. 1

   Observe if the inverter resumes feeding energy after a short period, as grid conditions may normalize.

2. 2

   Ensure all grid connections are stable and secure.

3. 3

   If this status code keeps recurring, contact your system fitter to investigate grid monitoring and inverter settings.