Solid red LED - Critical error, no grid power feed

What does Red LED solid mean?

A solid red light on the operating status LED indicates a critical error. The inverter has stopped feeding power to the grid. This requires immediate attention.

• Major internal fault
• Severe grid issue preventing operation
• Overload or safety shutdown

Click steps to track your progress.

1. 1

   Check the Fronius Solar.start app or the inverter's display for a specific error code or message.

2. 2

   Safely switch off the DC disconnector on the inverter, wait 30 seconds, then switch it back on.

3. 3

   If the error persists, contact a qualified service technician or your installer for assistance.