43
16.4. Error Codes Table
Abnormality / Protection control
Abnormality Judgement
Primary location to verify
Diagnosis display
H00
No abnormality detected
—
—
H15
Outdoor compressor temperature sensor
abnormality
Continue for 5 sec.
• Compressor temperature sensor
(defective or disconnected)
H23
Indoor refrigerant liquid temperature
sensor abnormality
Continue for 5 sec.
• Refrigerant liquid temperature sensor
(defective or disconnected)
H38
Indoor/Outdoor mismatch
—
• Indoor/Outdoor PCB
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)
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
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
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
F36
Outdoor air temperature sensor
abnormality
Continue for 5 sec.
• Outdoor air temperature sensor
(defective or disconnected)
F37
Indoor water inlet temperature sensor
abnormality
Continue for 5 sec.
• Water inlet temperature sensor
(defective or disconnected)
F40
Outdoor discharge pipe temperature
sensor abnormality
Continue for 5 sec.
• Outdoor discharge pipe temperature
sensor (defective or disconnected)
F41
PFC control
4 times occurrence within 10
minutes
• Voltage at PFC
F42
Outdoor heat exchanger temperature
sensor abnormality
Continue for 5 sec.
• Outdoor heat exchanger temperature
sensor (defective or disconnected)
F45
Indoor water outlet temperature sensor
abnormality
Continue for 5 sec.
• Water outlet temperature sensor
(defective or disconnected)
F46
Outdoor Current Transformer open
circuit
—
• Insufficient refrigerant
• Outdoor PCB
• Compressor low
Summary of Contents for WHUD30BE51
Page 10: ...10 4 Location of Controls and Components 4 1 Indoor Unit 4 1 1 Location of Control ...
Page 11: ...11 ...
Page 12: ...12 4 1 2 Main Components 4 2 Outdoor Unit ...
Page 13: ...13 5 Dimensions 5 1 Indoor Unit ...
Page 14: ...14 5 2 Outdoor Unit ...
Page 16: ...16 7 Block Diagram ...
Page 17: ...17 8 Wiring Connection Diagram 8 1 Indoor Unit ...
Page 18: ...18 8 2 Outdoor Unit ...
Page 19: ...19 9 Electronic Circuit Diagram 9 1 Indoor Unit ...
Page 20: ...20 9 2 Outdoor Unit ...
Page 21: ...21 10 Printed Circuit Board 10 1 Indoor Unit 10 1 1 Main Printed Circuit Board ...
Page 22: ...22 10 2 Outdoor Unit 10 2 1 Main Printed Circuit Board ...
Page 23: ...23 10 2 2 Capacitor Printed Circuit Board 10 2 3 Noise Filter Printed Circuit Board ...
Page 71: ...71 17 3 To Remove Pressure Gauge 17 4 To Remove Control Panel ...
Page 72: ...72 17 5 To Remove Electronic Controller Board and Transformer 17 6 To Remove RCCB ...
Page 74: ...74 When reinstall the water pipe use grease or water at the joining ...
Page 79: ...79 18 3 Hydraulic Pump Performance ...
Page 82: ...82 19 2 WH UD24BE5 1 WH UD30BE5 1 ...
Page 83: ...83 ...