Troubleshooting
68
Troubleshoo
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
P500
PV Insulation
Resistance
Insulation resistance level on PV is
lower than the limitation
Automatically restart after
PV IR is normal
P501
Inverter Over Temp.
The inverter IGBT temperature is
higher than the limitation
Automatically restart after
INV temp is normal
P502
PV Over Temp.
The PV IGBT temperature is higher
than the limitation
Automatically restart after
PV temp is normal
P503
Batt Over Temp.
The battery IGBT temperature is
higher than the limitation
Automatically restart after
Battery temp is normal
P504
DC Link Over Voltage
Voltage level of the DC Link is
higher than the limitation
Automatically restart after
DC Link voltage is normal
P505
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
P506
PVA Over Voltage
Voltage level of PV A is higher
than the limitation
Automatically restart after
PV A voltage is normal
P507
PVB Over Voltage
Voltage level of PV B is higher
than the limitation
Automatically restart after
PV B voltage is normal
P508
Batt A Over Voltage
Voltage level of battery A is higher
than the limitation
Automatically restart after
Battery A voltage is normal
P509
PVC Over Voltage
Voltage level of PV C is higher
than the limitation
Automatically restart after
PV C voltage is normal
P510
Batt B Over Voltage
Voltage level of battery B is higher
than the limitation
Automatically restart after
Battery B voltage is normal
P511
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
P512
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
P513
DC link Total under
Voltage
Voltage level of the DC Link total
is lower than the limitation
Automatically restart after
DC Link voltage is normal
P514
Batt B Over Current
Instant
Current level of the battery B is
instantaneously higher than the
limitation
Automatically restart
after Battery B Current is
normal