Fault Description / Instruction: Check Wires of PV and ground
- Turn OFF AC switch to disconnect inverter from grid
- Open fuse holders to isolate PV strings. Test strings with meter.
- Add one PV string and start inverter to see ifalarm occurs.
- If no alarm, turn OFF AC switches to disconnect from grid and add in the next string. Start inverter again.
- Continue until the string that triggers the alarm is identified. Trace back the faulted string to find any leakage to Earth Ground.