
Troubleshooting
65
Tr
oubleshoo
ting
4
Code
Message
Description
Solution
P474
Grid L3 DC Offset
Current
DC offset current is added on
grid(L3)
Automatically restart after
detecting fault
[GBB
PV Insulation
Resistance
Insulation resistance level on PV is
lower than the limitation
Automatically restart after
PV IR is normal
[GBC
Inverter Over Temp.
The inverter IGBT temperature is
higher than the limitation
Automatically restart after
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[GBD
PV Over Temp.
The PV IGBT temperature is higher
than the limitation
Automatically restart after
PV temp is normal
[GBE
Batt Over Temp.
The battery IGBT temperature is
higher than the limitation
Automatically restart after
Battery temp is normal
[GBF
DC Link Over Voltage
Voltage level of the DC Link is
higher than the limitation
Automatically restart after
DC Link voltage is normal
[GBG
DC Link Over Voltage
Unbalance
Voltage level of the DC Link
balance is higher than the
limitation
Automatically restart after
DC Link voltage is normal
[GBH
PVA Over Voltage
Voltage level of PV A is higher
than the limitation
Automatically restart after
PV A voltage is normal
[GBJ
PVB Over Voltage
Voltage level of PV B is higher
than the limitation
Automatically restart after
PV B voltage is normal
[GBK
Batt 1 Over Voltage
Voltage level of battery 1 is higher
than the limitation
Automatically restart after
Battery 1 voltage is normal
[GBI
PVC Over Voltage
Voltage level of PV C is higher
than the limitation
Automatically restart after
PV C voltage is normal
[GCB
Batt 2 Over Voltage
Voltage level of battery 2 is higher
than the limitation
Automatically restart after
Battery 2 voltage is normal
[GCC
DC link Top Over
Voltage
Voltage level of the DC Link Top is
higher than the limitation
Automatically restart after
DC Link voltage is normal
[GCD
DC link Bottom Over
Voltage
Voltage level of the DC Link
Bottom is higher than the
limitation
Automatically restart after
DC Link voltage is normal
[GCE
DC link Total Over
Voltage
Voltage level of the DC Link total
is higher than the limitation
Automatically restart after
DC Link voltage is normal
[GCF
Batt 2 Over Current
Instant
Current level of the battery 2 is
instantaneously higher than the
limitation
Automatically restart
after Battery 2 Current is
normal