User Manual
9 Troubleshooting and Maintenance
63
Fault
Code
Description
Troubleshooting
the combiner unit.
Inverter to PV Arrays”.
0048
Phase-R current
sampling channel fault.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
0049
Phase-S current
sampling channel fault.
0050
Phase-T current
sampling channel fault.
0051
Hardware Overvoltage/
Overcurrent protection
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
0070
Fans are defective.
Disconnect inverter and remove the broken
fan.
0071
Fault with AC SPD
It is necessary to replace the SPD module.
Contact Sungrow Service Dept..
0072
Fault with DC SPD
0073
Fuse has blown out
Disconnect inverter and replace the fuses.
Contact Sungrow Service Dept..
0074
Communication fault of
LCD
A fault has occurred in the internal
communication of the inverter. However, the
inverter continues feeding into the grid.
Contact Sungrow Service Dept..
0075
Solar irradiation is not
sufficient for inverter
operation.
1. Wait for higher irradiation.
2. If this recurs at medium irradiation, check
the PV system design and correct the
connection of PV inputs.
0076 PV1
overload
Check the PV system design and correct the
connection of PV1 inputs.
0077 PV2
overload
Check the PV system design and correct the
connection of PV2 inputs.
0078
PV1 power abnormal
warning
1. Check whether the PV1 input not connected
or loose.
2. If all PV1 input cables are firmly attached
and the warning fault still exists, please
contact Sungrow Service Dept..
0079
PV2 power abnormal
warning
1. Check whether the PV2 input not connected
or loose.
2. If all PV2 input cables are firmly attached
and the warning fault still exists, please
contact Sungrow Service Dept..
0087
There is a fault with the
AFD block.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
0088 Arcing
warning
Check the associated circuit and press ENTER
to remove the fault.
0089 AFD
disable
warning
Remove the fault by reactivating the AFD
function on the LCD screen.
