Sungrow SH10RT, User Manual

Page: 141 / 153

129
Alarm ID Alarm Name Corrective Measures
017
Grid Voltage
Unbalance
Generally, the inverter will be reconnected to the grid
after the grid returns to normal. If the fault occurs
repeatedly:
1. Measure the actual grid voltage. If grid phase vol-
tages differ greatly, contact the electric power com-
pany for solutions.
2. If the voltage difference between phases is within
the permissible range of the local power company,
modify the grid voltage imbalance parameter through
the App.
3. If the fault still exists, contact SUNGROW.
028, 029
PV Reverse Con-
nection Fault
1. Check whether the corresponding string is of re-
verse polarity. If so, disconnect the DC switch and ad-
just the polarity when the string current drops below
0.5 A.
2. If the fault still exists, contact SUNGROW.
*The code 28 to code 29 are corresponding to PV1 to
PV2 respectively.
037
High Ambient
Temperature
Generally, the inverter will resume operation when
the internal or module temperature returns to normal.
If the fault persists:
1. Check whether the ambient temperature of the in-
verter is too high;
2. Check whether the inverter is in a well-ventilated
place;
3. Check whether the inverter is exposed to direct
sunlight. Shield it if so;
4. Check whether the fan is running properly. Replace
the fan if not;
5. If the fault still exists, contact SUNGROW.
User Manual 10 Troubleshooting and Maintenance