52
9
Troubleshooting and
Maintenance
9.1
Troubleshooting
9.1.1 Troubleshooting of LED Indicator
Fault type
Troubleshooting
LED indicators and LCD screen
are OFF
Disconnect AC side circuit breaker.
Rotate DC switch to the “OFF” position.
Check the polarity of the PV arrays.
“RUN” indicator id OFF
Disconnect AC side circuit breaker.
Rotate DC switch to the “OFF” position.
Check the correctness of inverter electrical
connection.
Check whether DC input voltage exceeds the
inverter startup voltage of inverter.
If all above conditions are OK, please contact with
Sungrow.
“Fault” indicator is ON
A fault is not removed yet.
Perform troubleshooting according to fault type
in LCD screen.
If fault cannot be solved, please contact Sungrow.
“RUN” indicator is blinking
Warning fault occurs of the inverter.
Perform troubleshooting according to fault type
in LCD screen.
If fault cannot be solved, please contact Sungrow.
9.1.2 Troubleshooting of Faults in LCD Screen
When faults occur, “Fault” state will be shown on the main screen.
Press
to view
multiple “current fault” information pages.
Fault
Code
Description
Troubleshooting
002
The grid voltage
exceeds inverter
allowable range.
Protection time and
protection threshold
vary as per different
country’s requirements.
Check the grid voltage;
If the grid voltage exceeds the inverter
permissible range, ask utility grid company
for solution.
If the grid voltage is within the permissible
range, contact Sungrow.
