Error Codes Table - Panasonic WH-SDF09C3E5 Service Manual

17.4

Error Codes Table

Diagnosis display Abnormality / Protection control
H00 No abnormality detected
H12 Indoor/Outdoor capacity unmatched
H15 Outdoor compressor temperature sensor
abnormality
H23 Indoor refrigerant liquid temperature
sensor abnormality
H42 Compressor low pressure abnormality
H62 Water flow switch abnormality
H63 Refrigerant low pressure abnormality
H64 Refrigerant high pressure abnormality
H70 Back-up heater OLP abnormality
H72 Tank sensor abnormal
H76 Indoor - control panel communication
abnormality
H90 Indoor / outdoor abnormal
communication
H91 Tank heater OLP abnormality
H95 Indoor/Outdoor wrong connection
H98 Outdoor high pressure overload
protection
H99 Indoor heat exchanger freeze prevention
F12 Pressure switch activate
F14 Outdoor compressor abnormal revolution
F15 Outdoor fan motor lock abnormality
F16 Total running current protection
F20 Outdoor compressor overheating
protection
F22 IPM (power transistor) overheating
protection
F23 Outdoor Direct Current (DC) peak
detection
F24 Refrigeration cycle abnormality
F25 Cooling / Heating cycle changeover
abnormality
F27 Pressure switch abnormality
F36 Outdoor air temperature sensor
abnormality
F37 Indoor water inlet temperature sensor
abnormality
F40 Outdoor discharge pipe temperature
sensor abnormality
F41 PFC control
F42 Outdoor heat exchanger temperature
sensor abnormality
Abnormality Judgement
—
90s after power supply
Continue for 5 sec.
Continue for 5 sec.
—
Continue for 1 min.
4 times occurrence within
20 minutes
Continue for 5 sec.
Continue for 60 sec.
Continue for 5 sec.
—
> 1 min after starting operation
Continue for 60 sec.
—
—
—
4 times occurrence within
20 minutes
4 times occurrence within
20 minutes
2 times occurrence within
30 minutes
3 times occurrence within
20 minutes
4 times occurrence within
30 minutes
3 times occurrence within
30 minutes
7 times occurrence
continuously
2 times occurrence within
20 minutes
4 times occurrence within
30 minutes
Continue for 1 min.
Continue for 5 sec.
Continue for 5 sec.
Continue for 5 sec.
4 times occurrence within
10 minutes
Continue for 5 sec.
94
Primary location to verify
—
Indoor/outdoor connection wire
Indoor/outdoor PCB
Specification and combination table in
catalogue
Compressor temperature sensor
(defective or disconnected)
Refrigerant liquid temperature sensor
(defective or disconnected)
Outdoor pipe temperature sensor
Clogged expansion valve or strainer
Insufficient refrigerant
Outdoor PCB
Compressor
Water flow switch
Outdoor low pressure sensor (defective
or disconnected)
Outdoor high pressure sensor
(defective or disconnected)
Back-up heater OLP
(Disconnection or activated)
Tank sensor
Indoor - control panel
(defective or disconnected)
Internal / external cable connections
Indoor / Outdoor PCB
Tank heater OLP
(Disconnection or activated)
Indoor/Outdoor supply voltage
Outdoor high pressure sensor
Water pump or water leakage
Clogged expansion valve or strainer
Excess refrigerant
Outdoor PCB
Indoor heat exchanger
Refrigerant shortage
Pressure switch
Outdoor compressor
Outdoor PCB
Outdoor fan motor
Excess refrigerant
Outdoor PCB
Compressor tank temperature sensor
Clogged expansion valve or strainer
Insufficient refrigerant
Outdoor PCB
Compressor
Improper heat exchange
IPM (Power transistor)
Outdoor PCB
Compressor
Insufficient refrigerant
Outdoor PCB
Compressor low compression
4-way valve
V-coil
Pressure switch
Outdoor air temperature sensor
(defective or disconnected)
Water inlet temperature sensor
(defective or disconnected)
Outdoor discharge pipe temperature
sensor (defective or disconnected)
Voltage at PFC
Outdoor heat exchanger temperature
sensor (defective or disconnected)