Sungrow SG2500U-MV User Manual

System Manual 11 Troubleshooting
81
Fault
Fan2-flt
Possible
reason
Correspond to the fault of the MV Station module fan 2 (right side fan from the
front view)
Measure
Check the functionality of fan after the device is voltage-free
Remark
Contact Sungrow
Alarm
AC breaker flt
Possible
reason
AC side circuit breaker is abnormal
Measure
Check the AC circuit breaker when the MV Station is voltage-free
Remark
Before device stops, the MV Station can operate in grid-connection normally
Fault
Driver board fault
Possible
reason
Driver board fault
Measure
Stop the device to check and service the driver board.
Remark
Contact Sungrow
Fault
Carrier synch flt
Possible
reason
Carrier synchronization fault
Measure
The carrier synchronization cable is loose or broken.
Remark
Contact Sungrow
Fault
DC switch fault
Possible
reason
DC cabinet switch fault
Measure
Stop the device to check and service the DC cabinet switch
Remark
Contact Sungrow
Fault
Mism-ac
Possible
reason
Sensor is damaged
Measure
Replace the sensor with the same model after the device is voltage-free
Remark
Contact Sungrow
Fault
Ctrol cabt. Temp-flt
Possible
reason
The MV Station control cabinet fans fault
Measure
Check and maintain the control cabinet fan when device is voltage-free
Remark
Contact Sungrow
11.4 LCD Display Alarm Information and Troubleshooting
During alarm running state, the MV Station can operate normally and send warning signal.
User can check the alarm information through the Work state on the default menu or
through the Function->History-information->His-alarm interface to check the latest 100
history alarm information. The module will recover normal operation once the alarm is
removed.

Sungrow SG2500U-MV Specifications

General

Brand	Sungrow
Model	SG2500U-MV
Category	Inverter
Language	English