LG ESS Home 10 Installation Manual page 65

Code Message
P474 Grid L3 DC Offset
Current
PV Insulation
Resistance
Inverter Over Temp.
PV Over Temp.
Batt Over Temp.
DC Link Over Voltage
DC Link Over Voltage
Unbalance
PVA Over Voltage
PVB Over Voltage
Batt 1 Over Voltage
PVC Over Voltage
Batt 2 Over Voltage
DC link Top Over
Voltage
DC link Bottom Over
Voltage
DC link Total Over
Voltage
Batt 2 Over Current
Instant
Description
DC offset current is added on
grid(L3)
Insulation resistance level on PV is
lower than the limitation
The inverter IGBT temperature is
higher than the limitation
The PV IGBT temperature is higher
than the limitation
The battery IGBT temperature is
higher than the limitation
Voltage level of the DC Link is
higher than the limitation
Voltage level of the DC Link
balance is higher than the
limitation
Voltage level of PV A is higher
than the limitation
Voltage level of PV B is higher
than the limitation
Voltage level of battery 1 is higher
than the limitation
Voltage level of PV C is higher
than the limitation
Voltage level of battery 2 is higher
than the limitation
Voltage level of the DC Link Top is
higher than the limitation
Voltage level of the DC Link
Bottom is higher than the
limitation
Voltage level of the DC Link total
is higher than the limitation
Current level of the battery 2 is
instantaneously higher than the
limitation
Troubleshooting
Solution
Automatically restart after
detecting fault
Automatically restart after
PV IR is normal
Automatically restart after
Automatically restart after
PV temp is normal
Automatically restart after
Battery temp is normal
Automatically restart after
DC Link voltage is normal
Automatically restart after
DC Link voltage is normal
Automatically restart after
PV A voltage is normal
Automatically restart after
PV B voltage is normal
Automatically restart after
Battery 1 voltage is normal
Automatically restart after
PV C voltage is normal
Automatically restart after
Battery 2 voltage is normal
Automatically restart after
DC Link voltage is normal
Automatically restart after
DC Link voltage is normal
Automatically restart after
DC Link voltage is normal
Automatically restart
after Battery 2 Current is
normal
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