Over temperature
1. Check heatsink for obstructions/ventilation.
2. Check the ambient temperature around the inverter.
High DC Input Voltage
1. Disconnect the DC switch, remove the DC connector, measure the voltage of the PV string, and check if it exceeds the input-voltage specification of the inverter.
2. If exceed the specification, re-layout the PV module string.
3. If not exceed the specification, while the error still exits, please contact Customer Service.
Unconnected grid
1. Turn off DC switch, remove AC connector, measure the voltage between
fire line and the zero line, then check if it is consistent with the
grid-connected specification of inverter.
2. Inconsistent, check if the AC main switch is connected, check if the power
supply is normal working.
3. Consistent, connect the AC connector, turn on the DC Switch.
4. If error message still exists, contact Customer service.
Inverter grid-connected relay fault
Contact Customer service.
Grid frequency fault
1. If power grid frequency returns to normal, the inverter will restore the grid connection automatically.
2. If error message still exists, contact Customer service.
Grid voltage fault
1. Turn off DC switch, remove AC connector, measure the voltage between fire line and the zero line, then check if it is consistent with the grid-connected specification of inverter.
2. Inconsistent, check the grid layout.
3. Consistent, connect the AC connector, turn on DC Switch, inverter will restore the grid connection automatically.
4. If error message still exists, contact Customer service.
DC component over range
1. Restart inverter.
2. If error message still exists, contact Customer service.
Current sensor fault
1. Wait until inverter restores normal work.
2. If error message still exists, contact Customer service.
Fail safe
1. Check the cable connection of CT or meter.
2. Restart inverter.
3. If error message still exists, contact Customer service.
Leakage current detection unit fault
1. Check if there is any PV cable breakage.
2. Check if the PV modules grounding improperly.
3. Restart inverter.
4. If error message still exists, contact Customer service.
Leakage current fault
1. Check if PV strings grounding properly.
2. If error message still exists, contact Customer service.
DC insulation fault
1. Check if inverter grounding properly.
2. Check if the positive and negative poles of PV modules are short out to the PE cable.
3. Wait until inverter restores normal work.
4. If error message still exists, contact Customer service
Leakage current detection consistency error (Major)
1. Restart the inverter.
2. If error message still exists, contact Customer service.
Frequency detection consistency error (Major)
1. Restart the inverter.
2. If error message still exists, contact Customer service.
Power grid voltage detection consistency error (Major)
1. Restart the inverter.
2. If error message still exists, contact Customer service.
Leakage current detection consistency error (Minor)
1. Restart the inverter.
2. If error message still exists, contact Customer service.
Frequency detection consistency error (Minor)
1. Restart the inverter.
2. If error message still exists, contact Customer service.
Power grid voltage detection consistency error (Minor)
1. Restart the inverter.
2. If error message still exists, contact Customer service.
Secondary memory failure
1. Restart the inverter.
2. If error message still exists, contact Customer service.
Clock failure
1. Restart the inverter.
2. If error message still exists, contact Customer service.
Internal communication failure
1. Restart the inverter.
2. If error message still exists, contact Customer service.
Main memory failure
1. Restart the inverter.
2. If error message still exists, contact Customer service.