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Error
code
Failure cause
Electric component failure
LC
PCB failure
P1
Electric component failure
P4
Failure of capacity setting
PJ
Refrigerant failure (due to
U0
refrigerant leak)
Main circuit voltage failure
U2
Communication failure
U4
Communication failure
U5
Communication failure
U7
Communication failure
UA
EKHBH/X016BA
Indoor unit for air to water heat pump system
4PW54187-1B
Corrective action
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Installation manual
39
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