9 Troubleshooting and Maintenance
User Manual
62
Fault
Code
Description
Troubleshooting
Sungrow Service Dept..
0027
The DC current is not
balanced between the
two PV inputs for
parallel PV configuration
mode.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
0028
Inverter has checked the
reverse polarity of PV
connection.
1. Disconnect inverter.
2. Reconnect PV strings.
0036
The temperature of
module is too high
1. Check whether AC output power exceeds
norminal power too much.
2. Check whether fans work normally and
whether there are some abnormal fans. Please
replace broken fan, in necessary.
3. Clean air grills of outlet.
4. If the fault still exists, please contact with
Sungrow.
0037
The ambient
temperature is too high
0038
The inverter has
checked that there is a
fault of relay.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
0039
The insulation resistance
is low. (ISO-flt)
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
0040
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..
0041
There is a fault with
sampling channel.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
0042 Current
imbalance.
If the fault occurs repeatedly, contact Sungrow
Service Dept..
0043
The ambient
temperature falls below
-25
o
C
Disconnect inverter to stop. Wait for ambient
temperature to rise above -25
℃
and then
start inverter again.
0044
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..
0045
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..
0046
There is a fault with PV2
boost circuit.
0047
The PV configuration
mode set on the display
is not in accordance
with the configuration in
1. Disconnect inverter.
2. Re-select PV configuration mode and
re-connect PV strings. For more detailed
information please refer to “6.4 Connecting
