100
16.4 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
catalogue
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)
H42
Compressor low pressure abnormality
—
Outdoor pipe temperature sensor
Clogged expansion valve or strainer
Insufficient refrigerant
Outdoor PCB
Compressor
H62
Water flow switch abnormality
Continue for 1 min.
Water flow switch
H64
Refrigerant high pressure abnormality
Continue for 5 sec.
Outdoor high pressure sensor
(defective or disconnected)
H65 Deice
circulation
error Continue
for
10
sec.
Water flow switch sensor (defective or
disconnected)
Water pump malfunction
Buffer tank (is used)
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 sensor
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
Outdoor 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
Refrigerant shortage
F12 Pressure
switch
activate
4 times occurrence within 20
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 motor
F16
Total running current protection
3 times occurrence within 20
minutes
Excess refrigerant
Outdoor PCB
F20
Outdoor compressor overheating
protection
4 times occurrence within 30
minutes
Compressor tank temperature sensor
Clogged expansion valve or strainer
Insufficient refrigerant
Outdoor PCB
Compressor
F22
IPM (power transistor) overheating
protection
3 times occurrence within 30
minutes
Improper heat exchange
IPM (Power transistor)
F23
Outdoor Direct Current (DC) peak
detection
7 times occurrence
continuously
Outdoor PCB
Compressor
F24
Refrigeration cycle abnormality
2 times occurrence within 20
minutes
Insufficient refrigerant
Outdoor PCB
Compressor low compression
F25
Cooling/Heating cycle changeover
abnormality
4 times occurrence within 30
minutes
4-way valve
V-coil
F27
Pressure switch abnormality
Continue for 1 min.
Pressure switch
F30
Water outlet sensor 2 abnormality
Continue for 5 sec.
Water outlet sensor 2 (defective or
disconnected)
Summary of Contents for WH-SXC09F3E8
Page 37: ...37 10 1 2 Solar Printed Circuit Board Optional ...
Page 55: ...55 57 C 57 C 57 C 57 C ...
Page 56: ...56 ...
Page 62: ...62 ...
Page 63: ...63 ...
Page 64: ...64 57 C 57 C 50 C 50 C ...