Fronius Symo Hybrid Inverter Code 307 — DC low (DC input voltage too low for feeding into grid)

What does 307 mean?

The DC input voltage from the solar modules is too low to effectively feed energy into the grid. This can be a normal occurrence during low light conditions (early morning/evening).

• Low solar insolation (e.g., dawn, dusk, cloudy weather)
• Shading on PV modules
• Faulty PV string or module connection

Click steps to track your progress.

1. 1

   Wait for sufficient solar insolation to increase.

2. 2

   Check PV modules for any shading that might be significantly reducing output.

3. 3

   If this status code keeps recurring during periods of adequate sunlight, contact your system fitter.