7. Troubleshooting
7. Troubleshooting
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.
NOTE:
If the inverter displays any alarm message listed in Table 7.1; please
turn off the inverter and wait for 5 minutes before restarting it . If the
failure persists, please contact your local distributor or the service center.
Alarm Message
Failure description
Solution
UN-G-F01/02
UN-BUS01/02
Under grid voltage
Under grid frequency
Under DC bus voltage
1. Use user define function to adjust the
protection limit if it’s allowed by
electrical company.
1. Check inverter inductor connection.
2. Check driver connection.
UN-G-V01/02
12Power-FAULT
12V power supply fault
1. Restart inverter or contact installer.
Table 7.1 Fault message and description
If you have any technical problems with the hybrid system, please contact the Solis
after-sale service. We recommend gathering the following information before making
contact in order to get timely support.
Item
Inverter SN
Inverter Firmware Version
Alarm message
DC connections
Detailed description
of the problem
Details
Supplemental Info
SN from nameplate
6 digits of number or letter
(Check the inverter user
manual for the path)
Code showing on the inverter LCD
Solar modules, numbers,
configuration
Battery SN, Firmware version
Is it connected to Solis
Monitoring Portal?
Take pictures showing all the
cable connections in the
system (Videos preferred)
Check battery user manual for
the path
Yes/No
If available
1. Check the load of Backup port is over
rating output power or not.
2. Reduce the load of Backup port,
then restart inverter.
.66.
.67.