Sungrow SG10RT, User Manual, Page: 104 / 126

94
Fault code Fault name Corrective measures
13 Grid Abnormal
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, and contact the lo-
cal electric power company for solutions if the
grid parameter exceeds the set range.
2. Contact Sungrow Customer Service if the
preceding causes are ruled out and the fault
persists.
17
Grid Voltage Imbalance
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 voltages differ greatly, contact the elec-
tric power company 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 or the LCD.
3. Contact Sungrow Customer Service if the
preceding causes are ruled out and the fault
persists.
28, 29, 208,
448-479
PV Reserve Connection
Fault
1. Check whether the corresponding string is
of reverse polarity. If so, disconnect the DC
switch and adjust the polarity when the string
current drops below 0.5 A.
2. Contact Sungrow Customer Service if the
preceding causes are ruled out and the fault
persists.
*The code 28 to code 29 are corresponding to
PV1 to PV2 respectively.
*The code 448 to code 479 are corresponding
to string 1 to string 32 respectively.
9 Troubleshooting and Maintenance User Manual