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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
1. Disconnect AC side circuit breaker.
and LCD screen
2. Rotate DC switch to the "OFF" position.
cannot be lit
3. Check the polarity of DC input.
1. Disconnect AC side circuit breaker.
2. Rotate DC switch to the "OFF" position.
3. Check the correctness of electrical connection of inverter.
"RUN" indicator
See "6 Electrical Connection".
goes out
4. Check whether DC input voltage exceeds the inverter start
voltage of inverter.
5. If all above conditions are OK, please contact with
Sungrow.
1. A fault is not removed yet.
"Fault" indicator
2. Perform troubleshooting in according to fault type in LCD
is lit
screen. See "9.1.2 Troubleshooting of Faults in LCD Screen".
3. If it cannot be solved, please contact Sungrow.
1. Warning fault occurs of the inverter.
"RUN" indicator
2. Perform troubleshooting in according to fault type in LCD
is blinking
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
Description
Code
The
grid
002
exceeds
allowable upper limit.
Grid transient voltage
003
exceeds
permissible range
The grid voltage is
004
below
inverter's
allowable lower limit.
The grid voltage is too
005
low.
The AC output current
006
exceeds
protection limit.
Transient
007
overcurrent
41
Troubleshooting
1. Check the voltage of the grid.
2.
If
the
grid
permissible range of inverter protection
voltage
parameters, ask utility grid company for
inverter
solution.
3. If the grid voltage is within the
permissible
range,
Service Dept..
1. This is a short-term fault due to grid
condition. Wait a moment for inverter
the
recovery.
2. If the fault still exists, please contact
Sungrow Service Dept..
1. Check the grid voltage.
2.
If
the
grid
permissible range of inverter protection
parameters, ask utility grid company for
solution.
3. If the grid voltage is within the
permissible
range,
Service Dept..
1. This is a short-term fault due to grid
condition. Wait a moment for inverter
recovery.
2. If the fault still exists, please contact
Sungrow Service Dept..
1. The inverter will resume if the output
current falls below the protection value.
inverter
2. If the fault still exists, please contact
Sungrow Service Dept..
AC
The inverter will self-recover after several
seconds.
voltage
exceeds
the
contact
Sungrow
voltage
exceeds
the
contact
Sungrow
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