21
EnglishTroubleshooting
Diagnostic 
display
Abnormality/Protection 
control
H 00 No memory of failure
H 11
Indoor/outdoor abnormal 
communication
H 12 Indoor unit capacity unmatched
H 14
Indoor intake air temperature sensor 
abnormality
H 15
Outdoor compressor temperature 
sensor abnormality
H 16
Outdoor current transformer (CT) 
abnormality
H 17
Outdoor suction temperature sensor 
abnormality
H 19 Indoor fan motor mechanism lock
H 21
Indoor float switch operation 
abnormality
H 23
Indoor heat exchanger temperature 
sensor 1 abnormality
H 24
Indoor heat exchanger temperature 
sensor 2 abnormality
H 25
Indoor ion device abnormality
H 26
Minus ION abnormality
H 27
Outdoor air temperature sensor 
abnormality
H 28
Outdoor heat exchanger temperature 
sensor 1 abnormality
H 30
Outdoor discharge pipe temperature 
sensor abnormality
H 31 Abnormal swimming pool sensor
H 32
Outdoor heat exchanger temperature 
sensor 2 abnormality
H 33
Indoor/outdoor misconnection 
abnormality
H 34
Outdoor heat sink temperature sensor 
abnormality
H 35
Indoor/outdoor water adverse current 
abnormality
H 36
Outdoor gas pipe temperature sensor 
abnormality
H 37
Outdoor liquid pipe temperature 
sensor abnormality
H 38
Indoor/outdoor mismatch  (brand 
code)
Diagnostic 
display
Abnormality/Protection 
control
H 39
Abnormal indoor operating unit or 
standby units
H 41 Abnormal wiring or piping connection
H 50 Ventilation fan motor locked
H 51 Ventilation fan motor locked
H 52
Left-right limit switch fixing 
abnormality
H 58 Indoor gas sensor abnormality
H 59 Eco sensor 
abnormality
H 64
Outdoor high pressure sensor 
abnormality
H 67 nanoe 
abnormality
H 70 Light sensor 
abnormality
H 71
DC cooling fan inside control board 
abnormality
H 72
Abnormality tank temperature sensor
H 97 Outdoor fan motor mechanism lock
H 98 Indoor high pressure protection
H 99 Indoor operating unit freeze protection
F 11 4-way valve switching abnormality
F 16 Total running current protection
F 17
Indoor standby units freezing 
abnormality
F 18 Dry circuit blocked abnormality
F 87 Control box overheat protection
F 90
Power factor correction (PFC) circuit 
protection
F 91 Refrigeration cycle abnormality
F 93
Outdoor compressor abnormal 
revolution
F 94
Compressor discharge pressure 
overshoot protection
F 95
Outdoor cooling high pressure 
protection
F 96
Power transistor module overheating 
protection
F 97 Compressor overheating protection
F 98 Total running current protection
F 99
Outdoor direct current (DC) peak 
detection
*  Some error code may not be applicable to your model. Consult authorised dealer for clarification.
ACXF55-17690_book1.indb   21ACXF55-17690_book1.indb   21 12/7/2017   5:07:04 PM12/7/2017   5:07:04 PM