
OV-G-V01/02/03
/04/05
OV-G-F01/02
OV-DC01/02/03/04
Over grid voltage
Over grid frequency
Over DC voltage
1. Resistance of AC Cable is too high.
Increase the gauge of grid cables.
2. Adjust the protection limit if it is permitted
by electrical company.
1. Reduce the module number in series.
OV-G-I
Over grid current
Alarm Message
Failure description
Solution
1. Restart inverter.
2. Change power board.
1. User design function allows the protection
limit to be adjusted if it is permitted by
electrical company.
DC input overcurrent
AC side transient overcurrent
LLC hardware overcurrent
1. Restart inverter.
2. Identify and remove the string of the
faulted MPPT.
3. Change power board.
1. Restart inverter.
.
2. Return-factory repair
OV-DCA-I
OV-IgTr
OV-ILLC
OV-TEM
OV-Vbatt1
OV-Vbatt-H
Over-Load
OV-VBackup
Over Temperature
The detection of battery
overvoltage
Battery overvoltage
hardware fault
Backup overload fault
Backup overvoltage fault
1. Check inverter surrounding ventilation.
2. Determine if there is direct sunlight on the
inverter during hot weather.
1. Verify the protection point for over voltage
is set correctly.
2. Restart inverter.
1. Check if any part of the battery input circuit
is tripped, ie. battery fuses, battery circuit
breaker.
2. Restart inverter.
PV ISO-PRO01/02
PV isolation protection
1. Remove all DC input, reconnect and
restart inverter one by one.
2. Identify which string cause the fault and
check the isolation of the string.
RelayChk-FAIL
Relay check fail
1. Restart inverter or contact installer.
1. Check the load of Backup port is over
rating output power or not.
2. Reduce the load of Backup port,
then restart inverter.
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6. Troubleshooting