User Manual
9 Troubleshooting and Maintenance
43
Fault
Code
Description
Troubleshooting
036
The temperature of
module is too high
1. Check whether AC output power
exceeds the nominal power.
2. Check the functionality of the fans and
whether there are some abnormal fans.
Please replace broken fan if necessary.
3. Clean air outlet grills.
4. If the fault still exists, please contact
Sungrow.
037
The
ambient
temperature is too high
038
Relay fault is detected
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
039
The
insulation
resistance
is
low.
(ISO-flt)
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
040
AC or DC overcurrent
fault,
or
DC
overvoltage fault.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
041
Sampling
channel
failure
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
042
Current imbalance.
If the fault occurs repeatedly, contact
Sungrow Service Dept..
043
The
ambient
temperature
falls
below -25
o
C
Disconnect and stop the inverter. Wait for
ambient temperature to rise above -25
℃
and then restart inverter.
044
There is a fault with
DC/AC
inversion
circuit
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
045
There is a fault with
PV1 boost circuit.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
046
There is a fault with
PV2 boost circuit.
047
The PV configuration
mode set on the
display
is
not
in
accordance with the
configuration in the
connection cabinet.
1. Disconnect the inverter.
2. Re-select PV configuration mode and
re-connect PV strings. For more detailed
information please refer to “6.3 Connecting
Inverter to PV Arrays”.
048
Phase-R
current
sampling channel fault.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
049
Phase-S
current
sampling channel fault.
050
Phase-T
current
sampling channel fault.
051
Hardware
Overvoltage/
Overcurrent protection
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
070
Fans are defective.
Disconnect inverter and remove the broken
fan.
072
Fault with DC SPD
It is necessary to replace the DC SPD.
Contact Sungrow Service Dept..
073
Fuse has blown out
Disconnect the inverter and replace the
fuses. Contact Sungrow Service Dept..
074
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..
075
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.
076
PV1 overload
Check the PV system design and correct
the connection of PV1 inputs.
077
PV2 overload
Check the PV system design and correct
the connection of PV2 inputs.
078
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..
079
PV2 power abnormal
warning
1. Check whether the PV2 input not
connected or loose.
2. If all PV2 input cables are firmly attached
