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9 Troubleshooting and
Maintenance
9.1 Troubleshooting
9.1.1 Troubleshooting of LED Indicator
See “Tab. 2-2 Description of LED Indicator Status” for definition of LED’s states.
Type of fault Troubleshooting
LED indicators
and LCD screen
cannot be lit
1. Disconnect AC side circuit breaker.
2. Rotate DC switch to the “OFF” position.
3. Check the polarity of DC input.
“RUN” indicator
goes out
1. Disconnect AC side circuit breaker.
2. Rotate DC switch to the “OFF” position.
3. Check the correctness of electrical connection of inverter. See
“6 Electrical Connection”.
4. Check whether DC input voltage exceeds the inverter start
voltage of inverter.
5. If all above conditions are OK, please contact with Sungrow.
“Fault” indicator
is lit
1. A fault is not removed yet.
2. Perform troubleshooting in according to fault type in LCD
screen. See “9.1.2 Troubleshooting of Faults in LCD Screen”.
3. If it cannot be solved, please contact Sungrow.
“RUN” indicator is
blinking
1. Warning fault occurs of the inverter.
2. Perform troubleshooting in according to fault type in LCD
screen. See “9.1.2 Troubleshooting of Faults in LCD Screen”.
3. If it 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.
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