Troubleshooting
The operation LED blinks and error code appears on
the display.
• Disconnect the power supply, and
report the error code to an authorised
dealer.
• The timer operation will be cancelled
when an error code is displayed.
Diagnostic
Abnormality or Protection
display
control works
H12
Capacity mismatch
Abnormal compressor temperature
H15
sensor
H20
Abnormal water pump
H23
Abnormal refrigerant 1 sensor
H27
Abnormal service valve
H42
Compressor low pressure protection
H62
Abnormal water flow
H64
Abnormal high pressure sensor
H65
Abnormal deice water circulation
Abnormal back-up heater overload
H70
protector
H72
Abnormal tank temperature sensor
H76
Control panel communication error
Abnormal indoor / outdoor
H90
communication
H91
Abnormal tank heater overload protector
H95
Abnormal voltage connection
H98
Outdoor high pressure protection
H99
Indoor heat exchanger freeze prevention
14
Diagnostic
Abnormality or Protection
display
control works
F12
Pressure switch activated
F14
Poor compressor rotation
F15
Abnormal outdoor fan motor lock
F16
Comprehensive current protection
Compressor temperature overload
F20
protection
Transistor module temperature overload
F22
protection
F23
DC peak abnormal of operation
F24
Abnormal Refrigerant cycle
F25
Abnormal in a cooling / heating charge
F27
Abnormal pressure switch
F30
Abnormal water outlet sensor 2
Abnormal outdoor air temperature
F36
sensor
F37
Abnormal water inlet sensor
F40
Abnormal outdoor discharge sensor
F41
Abnormal power factor correction
Abnormal outdoor heat exchanger
F42
sensor
F43
Abnormal outdoor defrost sensor
F45
Abnormal water outlet sensor
Abnormalities in outdoor current
F46
transformer disconnection
Abnormal evaporator outlet temperature
F48
sensor
Abnormal bypass outlet temperature
F49
sensor
F95
Abnormal cooling high pressure