Sungrow SG1250UD User Manual

10. Troubleshooting Operation Manual
58
Fault
Ctrol cabt. Temp-flt
Possible
reason
Inverter control cabinet fans fault
Measure
Check and maintain the control cabinet fan when device is voltage-free
Remark
Contact Sungrow
Fault
Control cabinet fan fault
Possible
reason
The fan's power supply abnormal or the fan is blocked
Measure
Check and maintain the fan when device is voltage-free
Remark
Contact Sungrow
Fault
Soft-start-flt
Possible
reason
Inverter cannot start normally due to internal hardware fault
Measure
Contact Sungrow
Remark
-
Fault
Carrier sync fault
Possible
reason
The parallel connection carrier sync cable is abnormal
Measure
Contact Sungrow to check and maintain the device
Remark
-
Fault
Parallel operation comm. fault
Possible
reason
Device internal parallel connection communication cable is abnormal
Measure
Contact Sungrow to check and maintain the device
Remark
-
Fault
Device code repeat flt
Possible
reason
Inverter internal unit address is abnormal
Measure
Contact Sungrow to check and maintain the device
Remark
-
Fault
Vdc-samp-flt
Possible
reason
DC voltage sampling channel abnormal
Measure
Contact Sungrow
Remark
-
10.4 LCD Display Alarm Information and Troubleshooting
During alarm run state, the inverter can operate normally and send a warning signal. User
can check the warn information through the Work state on the default menu or through the
Function->His-state interface to check the latest 1000 history warn information. Inverter will
recover normal operation once the warning is removed.

Sungrow SG1250UD Specifications

General

Brand	Sungrow
Model	SG1250UD
Category	Inverter
Language	English