Troubleshooting
71
Troubleshoo
ting
4
Code
Message
Description
Solution
P548
INV L1 Over Voltage
Voltage level of Inverter L1 is
higher than the limitation
Automatically restart after
detecting fault
P549
INV L2 Over Voltage
Voltage level of Inverter L2 is
higher than the limitation
Automatically restart after
detecting fault
P550
INV L3 Over Voltage
Voltage level of Inverter L3 is
higher than the limitation
Automatically restart after
detecting fault
P551
PV Source
Unmatching
Invalid PV source connection
Automatically restart after
detecting fault
P552
Battery Source
Unmatching
Invalid Battery source connection
Automatically restart after
detecting fault
P553
Battery A
Disconnection
BMS communication is connected
but the power line of battery A is
not connected
Automatically restart after
detecting fault
P554
Battery B
Disconnection
BMS communication is connected
but the power line of battery B is
not connected
Automatically restart after
detecting fault
P555
Unacceptable Load
Fault L1
unacceptable L1 load is connected
in backup mode
Check if the unacceptable
load is connected
P556
Unacceptable Load
Fault L2
unacceptable L2 load is connected
in backup mode
Check if the unacceptable
load is connected
P557
Unacceptable Load
Fault L3
unacceptable L3 load is connected
in backup mode
Check if the unacceptable
load is connected
P558
Over Load Fault Total
Total load is connected more
than maximum usable capacity in
backup mode
Check if the load is
connected under Maximum
usable capacity
P559
Over Load Fault L1
L1 load is connected more than
maximum usable capacity in
backup mode
Check if the load is
connected under Maximum
usable capacity
P560
Over Load Fault L2
L2 load is connected more than
maximum usable capacity in
backup mode
Check if the load is
connected under Maximum
usable capacity
P561
Over Load Fault L3
L3 load is connected more than
maximum usable capacity in
backup mode
Check if the load is
connected under Maximum
usable capacity