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User Manual
Fault Code
332-363
364-395
1548-1579
Fault Name
Corrective Measures
1. The inverter can continue running.
2. Check whether the related wiring and termi-
nals are abnormal, check whether there are any
Boost Capacitor
foreign materials or other environmental abnor-
Overvoltage Alarm
malities, and take corresponding corrective
measures when necessary.
If the fault persists, please contact Sungrow
Power Customer Service.
1. Disconnect the AC and DC switches, and dis-
connect the battery side switches if there are bat-
Boost Capacitor
teries. Close the AC and DC switches in turn 15
minutes later and restart the system.
Overvoltage Fault
2. If the fault persists, please contact Sungrow
Power Customer Service.
1. Check whether the number of PV modules of
the corresponding string is less than other strings.
If so, disconnect the DC switch and adjust the PV
module configuration when the string current
drops below 0.5 A.
2. Check whether the PV module is shaded;
String Current
Reflux
3. Disconnect the DC switch to check whether
the open circuit voltage is normal when the string
current drops below 0.5 A. If so, check the wiring
and configuration of the PV module,
4. Check whether the orientation of the PV mod-
ule is abnormal.
9 Troubleshooting and Maintenance
103
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