Panasonic AQUAREA WH-ADC0912K6E5AN - 18.4 Error Codes Table

188
18.4 Error Codes Table
Diagnosis display Abnormality/Protection control Abnormality judgement Primary location to verify
H00 No abnormality detected
—
—
H12 Indoor/Outdoor capacity unmatched 90s after power supply
 Indoor/outdoor connection wire
 Indoor/outdoor PCB
 Specification and combination table in
catalo
g
ue
H15
Outdoor compressor temperature sensor
abnormality
Continue for 5 sec.
 Compressor temperature sensor
(
defective or disconnected
)
H20 Water pump abnormality Continue for 10 sec.
 Indoor PCB

Water pump
(
malfunction
)
H23
Indoor refrigerant liquid temperature
sensor abnormality
Continue for 5 sec.
 Refrigerant liquid temperature sensor
(
defective or disconnected
)
H27 Service valve error Continue for 5 minutes
 High pressure sensor (defective or
disconnected
)
H28 Abnormal solar sensor Continue for 5 sec.
 Solar temperature sensor (defective or
disconnected
)
H31 Abnormal swimming pool sensor Continue for 5 sec.
 Pool temperature sensor (defective or
disconnected
)
H36 Abnormal buffer tank sensor Continue for 5 sec.
 Buffer tank sensor (defective or
disconnected
)
H38 Brand code not match
When indoor and outdoor
brand code not same
—
H42 Compressor low pressure abnormality —
 Outdoor pipe temperature sensor
 Clogged expansion valve or strainer
 Insufficient refrigerant
 Outdoor PCB

Compresso
r
H43 Abnormal Zone 1 sensor Continue for 5 sec.
 Water temperature Zone 1 senso
r
H44 Abnormal Zone 2 sensor Continue for 5 sec.

Water temperature Zone 2 senso
r
H62 Water flow switch abnormality Continue for 1 min.
 Water flow switch
H63 Abnormal low pressure sensor 4 times in 20 minutes
 Low pressure sensor (defective or
disconnect)
H64 Refrigerant high pressure abnormality Continue for 5 sec.
 Outdoor high pressure sensor
(defective or disconnected)
H65 Abnormal deice water circulation
water flow > 7 l/min
continuously for 20 seconds
durin
g
anti freeze deice
 Water pump
H67 Abnormal External Thermistor 1 Continue for 5 sec.
 Room temperature Zone 1 senso
r
H68 Abnormal External Thermistor 2 Continue for 5 sec.

Room temperature Zone 2 senso
r
H70 Back-up heater OLP abnormality Continue for 60 sec.
 Back-up heater OLP
(
Disconnection or activated
)
H72 Tank sensor abnormal Continue for 5 sec.

Tank senso
r
H74 PCB communication error
Communication or transfer
erro
r
 Indoor main PCB and Sub PCB
H75 Low water temperature control
Room heater disable and deice
request to operate under low
water temperature
 Heater operation must enable to
increase water temperature
H76
Indoor - control panel communication
abnormality
—
 Indoor - control panel
(
defective or disconnected
)
H90 Indoor/outdoor abnormal communication > 1 min after starting operation
 Internal/external cable connections

Indoor/Outdoor PCB
H91 Tank heater OLP abnormality Continue for 60 sec.
 Tank heater OLP
(
Disconnection or activated
)
H95 Indoor/Outdoor wrong connection —
 Indoor/Outdoor supply voltage
H98 / F95
Outdoor high pressure overload
protection
Cooling high pressure overload
protection
—
 Outdoor high pressure sensor
 Water pump or water leakage
 Clogged expansion valve or strainer
 Excess refrigerant

Outdoor PCB
H99 Indoor heat exchanger freeze prevention —
 Indoor heat exchanger

Refri
g
erant shorta
g
e
F12 Pressure switch activate
4 times occurrence within
30 minutes
 Pressure switch
F14 Outdoor compressor abnormal revolution
4 times occurrence within
20 minutes
 Outdoor compressor
F15 Outdoor fan motor lock abnormality
2 times occurrence within
30 minutes
 Outdoor PCB

Outdoor fan moto
r
F16 Total running current protection
3 times occurrence within
20 minutes
 Excess refrigerant

Outdoor PCB