69
9
Troubleshooting and
Maintenance
9.1
Troubleshooting
9.1.1 Troubleshooting of LED Indicator
See “
Tab. 2-2 Description of LED Indicators
” for the definition of indicator states.
Fault type
Troubleshooting
LED indicators and LCD
screen cannot be lit
1. Disconnect AC circuit breaker.
2. Rotate the DC Switch to the “OFF” position.
3. Check the polarity of DC input.
“RUN” indicator goes out
1. Disconnect AC circuit breaker.
2. Rotate the DC Switch to the “OFF” position.
3. Check the correctness of electrical connection of
inverter. See “
Fig. 5-1Electrical Connection Diagram
”.
4. Check whether DC input voltage exceeds the inverter
start voltage.
5. If all above conditions are OK, please contact
SUNGROW.
“Fault” indicator is lit
1. A fault is not removed.
2. Perform troubleshooting 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.
Fault code
Specification
Troubleshooting
002
The grid voltage has
exceeded inverter
allowable upper limit.
1. Check the voltage of the grid.
2. If the grid voltage exceeds the
permissible range of inverter protective
parameters, ask utility grid company for
solution.
3. If the grid voltage is within the
permissible range, contact SUNGROW
Service Dept..