7. Troubleshooting
User Manual
39
Message Name
Information Description
Troubleshooting Suggestion
BatName-FAIL
OV-Vbatt
UN-Vbatt
Fan Alarm
OV-DC01
(1020 DATA:0001)
OV-DC02
(1020 DATA:0002)
OV-BUS
(1021 DATA:0000)
UN-BUS01
(1023 DATA:0001)
UNB-BUS
(1022 DATA:0000)
UN-BUS02
(1023 DATA:0002)
DC-INTF.
(1027 DATA:0000)
OV-G-I
(1018 DATA:0000)
OV-DCA-I
(1025 DATA:0000)
OV-DCB-I
(1026 DATA:0000)
GRID-INTF.
(1030 DATA:0000)
Wrong battery brand selection
Battery undervoltage detected
Fan alarm
DC 1 input overvoltage
DC 2 input overvoltage
DC bus overvoltage
DC bus undervoltage
DC bus unbalanced voltage
Abnormal detection of
DC bus voltage
DC hardware overcurrent
(1, 2, 3, 4)
A phase RMS value
overcurrent
DC 1 average overcurrent
DC 2 average overcurrent
AC hardware overcurrent
(abc phase)
Battery overvoltage detected
1. Confirm whether the battery model selection
is consistent with the actual one.
1. Restart the system and check if the fault
persists.
If it is still not eliminated, please
contact the manufacturer's customer service.
1. Check if the internal fan is working correctly
or jammed.
1. Check if the PV voltage is abnormal
2. Restart the system, confirm that the fault
continues
1. Restart the system, confirm that the fault
continues.
1. Check if the DC wires are connected correctly
without loose connection.
1. Confirm that the grid is abnormal.
2. Confirm that the AC cable connection is not
abnormal.
3. Restart the system, confirm that the fault
continues.
1. Restart the system, confirm that the fault
continues.
1. Verify battery voltage is within standards.
Measure battery voltage at inverter connection
point. Contact your battery manufacturer for
further service.
CAN Fail
CAN Fail
1. Can failure is a failure of communication
between inverter and battery. Check cable
conditions. Check to ensure you have it
plugged in on the CAN port of the battery and
inverter. Check that you are using the right
cable. Some batteries require a special
battery from the battery manufacturer.
