EarthCurrentMax - Ground fault in PV array

What does EarthCurrentMax mean?

The SMA Sunny Boy inverter has detected a ground fault in the PV array. This means the current between PV+ and ground is outside the acceptable range. This message appears on the display, and the GFDI fuse may have cleared.

• Ground fault in the PV array.

Click steps to track your progress.

1. 1

   Switch off the external DC disconnect for the Sunny Boy.

2. 2

   Switch off the main AC circuit breaker in the main utility panel for the Sunny Boy.

3. 3

   Thoroughly troubleshoot the PV array to locate and clear the ground fault.

4. 4

   Replace the GFDI fuse only after the ground fault has been completely cleared.

5. 5

   Re-enable AC and DC power after the fuse replacement.