Yellow LED blinks 4 times — DC input voltage too high

What does Yellow LED blinks 4 times mean?

The inverter has detected that the DC input voltage from the PV array is too high for safe operation. This condition can lead to damage to the inverter.

• DC input voltage from the PV generator exceeds safe operating limits.
• Incorrect PV string configuration or module compatibility.

Click steps to track your progress.

1. 1

   Contact your installer immediately. They will need to disconnect the PV generator from the inverter.

2. 2

   Your installer must check the DC voltage of the PV generator according to the inverter installation guide.

3. 3

   Ensure the DC voltage at the DC disconnect switch is tested before attempting to re-energize the Sunny Boy.