Sungrow SG40KTL User Manual

41
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.
Fault
Code
Description Troubleshooting
002
The grid voltage
exceeds inverter
allowable upper limit.
1. Check the voltage of the grid.
2. If the grid voltage exceeds the
permissible range of inverter protection
parameters, ask utility grid company for
solution.
3. If the grid voltage is within the
permissible range, contact Sungrow
Service Dept..
003
Grid transient voltage
exceeds the
permissible range
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..
004
The grid voltage is
below inverter’s
allowable lower limit.
1. Check the grid voltage.
2. If the grid voltage exceeds the
permissible range of inverter protection
parameters, ask utility grid company for
solution.
3. If the grid voltage is within the
permissible range, contact Sungrow
Service Dept..
005
The grid voltage is too
low.
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..
006
The AC output current
exceeds inverter
protection limit.
1. The inverter will resume if the output
current falls below the protection value.
2. If the fault still exists, please contact
Sungrow Service Dept..
007
Transient AC
overcurrent
The inverter will self-recover after several
seconds.

Sungrow SG40KTL Specifications

General

Brand	Sungrow
Model	SG40KTL
Category	Inverter
Language	English