Sungrow SG500MX User Manual

10 Troubleshooting Operation Manual
48
Fault
F-fault
Possible
reason
The grid frequency is outside the permitted range
Measure
Check grid frequency
Check if the AC cables are securely connected.
Remar
k
Inverter automatically reconnects to the grid once the grid voltage recovers normal
Fault
Gnd-flt
Possible
reason
Inverter AC side leakage current to the ground exceeds the set value (default: 5A)
Measure
-
Remar
k
Inverter automatically reconnects to the grid once the leakage current recovers
Fault
Iac-high
Possible
reason
Internal short-circuit or internal components damages
Measure
Check the AC side cable connection and the control circuit board.
Remar
k
Contact Sungrow
Fault
Temp-flt
Possible
reason
Inverter internal temperature exceeds the permitted value
Measure
Check functionality of fan after the device is voltage-free
Remar
k
Stop the inverter if this fault occurs 10 times per day
Fault
PM-high
Possible
reason
Module temperature exceeds the permitted value
Measure
Check the module and ventilation after the device is voltage-free
Remar
k
Stop the inverter if this fault occurs 5 times per day
Fault
L over-temp
Possible
reason
Reactor temperature exceeds the permitted value
Measure
Check the reactor after the device is voltage-free
Remar
k
-
Fault
PDP-pro
Possible
reason
Internal fault
Measure
Wait 5 minutes for inverter auto-reconnection or disconnect first and then connect
the AC main switch
Contact Sungrow if the fault insists
Remar
k
Stop the inverter if this fault occurs 5 times per day
Fault
Cntr-flt
Possible
reason
Contactor connected to the gird failure
Measure
Check the contactor after the device is voltage-free
Remar
k
Stop the inverter if this fault occurs 5 times per day。

Sungrow SG500MX Specifications

General

Brand	Sungrow
Model	SG500MX
Category	Inverter
Language	English