BFR-Related Earth Current Exceeds Tolerable Range

What does EarthCurMax-B mean?

The earth current between the PV+ conductor and ground (GND), monitored by the BFR (Betriebsführungsrechner), has exceeded its acceptable operating range in the Sunny Boy SB50US-80US-IUS094030. This indicates a ground fault in the PV array. The inverter will disconnect from the grid.

• Ground fault in the PV array detected by the BFR.
• Ground fault current exceeding 1 Amp.

Click steps to track your progress.

1. 1

   Switch off the external DC disconnect to the Sunny Boy SB50US-80US-IUS094030.

2. 2

   Switch off the main AC circuit breaker connecting the Sunny Boy to the grid.

3. 3

   Troubleshoot the PV array to locate and clear the ground fault.

4. 4

   Manually clear the ground fault error on the user interface display after correction.