8. Troubleshooting
.83.
.84.
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.
Message Name
Information Description
Troubleshooting Suggestion
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.
DCInj-FAULT
(1037 DATA:0000)
The current DC component
exceeds the limit
IGBT-OV-I
(1048 DATA:0000)
OV-TEM
(1032 DATA:0000)
UN-TEM
(103A DATA:0000)
PV ISO-PRO01
(1033 DATA:0001)
PV ISO-PRO02
(1033 DATA:0002)
12Power-FAULT
(1038 DATA:0000)
ILeak-PRO01
(1034 DATA:0001)
ILeak-PRO02
(1034 DATA:0002)
ILeak-PRO03
(1034 DATA:0003)
ILeak-PRO04
(1034 DATA:0004)
ILeak_Check
(1039 DATA:0000)
GRID-INTF02
(1046 DATA:0000)
OV-Vbatt-H/
OV-BUS-H
(1051 DATA:0000)
IGBT overcurrent
Module over temperature
Low temperature protection
PV negative ground fault
PV positive ground fault
12V undervoltage failure
Leakage current failure 01
(30mA)
Leakage current failure 02
(60mA)
Leakage current failure 03
(150mA)
Leakage current failure 04
Leakage current sensor
failure
Power grid disturbance 02
Battery overvoltage hardware
failure / VBUS
1. Restart the system, confirm that the fault
continues.
1. Check whether the surrounding environment
of the inverter has poor heat dissipation.
2. Confirm whether the product installation
meets the requirements.
RelayChk-FAIL
(1035 DATA:0000)
Relay failure
1. Restart the system, confirm that the fault
continues.
1. Check the working environment temperature
of the inverter.
2. Restart the system to confirm if the fault
continues.
1. Check whether the PV strings have insulation
problems.
2. Check whether the PV cable is damaged.
1. Check current leakage to ground.
Verify your grounding.
Verify all wires are in good condition and not
leaking current to ground.
1. Confirm whether the grid is seriously distorted.
2. Check whether the AC cable is connected
reliably.
1. Check if the battery circuit breaker is tripping.
2. Check if the battery is damaged.
8. Troubleshooting
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.
