Press for
5 seconds
Press until you hear beep
sound, then write down the
error code
21
Press for 5
seconds to
quit checking
3
Turn the unit off and
reveal the error code to
authorised dealer
4
•
For certain errors, you may restart the unit for limited operation if there are 4 beeps when operation starts.
* Some error code may not be applicable to your model. Consult authorised dealer for clarifi cation.
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 fl oat 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 fi xing
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
Troubleshooting
ACXF55-17030_SS0218-0.indb 24ACXF55-17030_SS0218-0.indb 24 18/12/2017 3:15:37 PM18/12/2017 3:15:37 PM