LG ESS Home 10 Installation Manual page 71

Code Message
P548 INV L1 Over Voltage
P549 INV L2 Over Voltage
P550 INV L3 Over Voltage
P551 PV Source
Unmatching
P552 Battery Source
Unmatching
P553 Battery A
Disconnection
P554 Battery B
Disconnection
P555 Unacceptable Load
Fault L1
P556 Unacceptable Load
Fault L2
P557 Unacceptable Load
Fault L3
P558 Over Load Fault Total
P559 Over Load Fault L1
P560 Over Load Fault L2
P561 Over Load Fault L3
Description
Voltage level of Inverter L1 is
higher than the limitation
Voltage level of Inverter L2 is
higher than the limitation
Voltage level of Inverter L3 is
higher than the limitation
Invalid PV source connection
Invalid Battery source connection
BMS communication is connected
but the power line of battery A is
not connected
BMS communication is connected
but the power line of battery B is
not connected
unacceptable L1 load is connected
in backup mode
unacceptable L2 load is connected
in backup mode
unacceptable L3 load is connected
in backup mode
Total load is connected more
than maximum usable capacity in
backup mode
L1 load is connected more than
maximum usable capacity in
backup mode
L2 load is connected more than
maximum usable capacity in
backup mode
L3 load is connected more than
maximum usable capacity in
backup mode
Troubleshooting
Solution
Automatically restart after
detecting fault
Automatically restart after
detecting fault
Automatically restart after
detecting fault
Automatically restart after
detecting fault
Automatically restart after
detecting fault
Automatically restart after
detecting fault
Automatically restart after
detecting fault
Check if the unacceptable
load is connected
Check if the unacceptable
load is connected
Check if the unacceptable
load is connected
Check if the load is
connected under Maximum
usable capacity
Check if the load is
connected under Maximum
usable capacity
Check if the load is
connected under Maximum
usable capacity
Check if the load is
connected under Maximum
usable capacity
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