Cause-
- Inverter detects arc in DC circuit
Solution-
- Inspect installation
- Check cable with string tester
- Physically check cables
- Inspect panel junction boxes
- Inspect cable connections
- Reset inverter
- Replace inverter
Troubleshooting - Arc Faults are detected within the DC circuit. Please check the MC4 Heads to see if they are broken or loose. Connections in the in the inverter terminal or fuse block can also have this issue; check connections to the block. Connection to the Junction box may be caused by loose/bad connections. Additional areas to check : PV panel for damage, Firmware, Sensitivity settings, AFCI Board for damage. Additionally checking the cable and it's connections from the AFCI board and DSP can remedy this Error Code.