SMA · Sunny Boy Inverters
Both the Red and Yellow LEDs are illuminated, indicating that the inverter has detected a ground fault in the PV system and has disconnected from the grid. The inverter will not restart automatically until the ground fault is located and fixed.
Click steps to track your progress.
Contact your installer immediately to report the ground fault.
Your installer must locate and fix the ground fault in the PV system before the inverter can resume normal operation.
Refer to the inverter installation guide for information on solving PV array ground faults, which your installer will use.