Fronius Symo Hybrid Inverter Code 309 — PV input voltage too high

What does 309 mean?

The input voltage from the photovoltaic (PV) modules has exceeded the inverter's permissible limit. This causes a short-term interruption in feeding energy, and the inverter will attempt to restart.

• Overvoltage from PV string configuration
• Extreme cold temperatures increasing PV voltage
• Internal inverter PV input circuit fault

Click steps to track your progress.

1. 1

   Observe the inverter to see if it successfully repeats its start-up routine and resumes operation.

2. 2

   Ensure the PV array configuration matches the inverter's voltage specifications.

3. 3

   If this status code keeps recurring, contact your system fitter to check PV string voltage and inverter input limits.