41
13.4 Error Codes Table
Diagnosis
display
Abnormality / Protection control
Abnormality
Judgment
Emergency
Operation
Primary location to verify
H00
No abnormality detected
─
Normal operation
─
H11
Indoor / outdoor abnormal communication
> 1 min. after
starting operation
Indoor fan
operation only
Internal / external cable connections
Indoor / Outdoor PCB
H12
Connection capability rank abnormal
─
─
─
H14
Indoor intake air temperature sensor
abnormality
Continue for 5 sec.
─
Intake air temperature sensor
(defective or disconnected)
H15
Outdoor compressor temperature sensor
abnormality
Continue for 5 sec.
─
Compressor temperature sensor
(defective or disconnected)
H16
Outdoor Current Transformer open circuit
─
─
Outdoor PCB
IPM (Power transistor) module
H19
Indoor fan motor mechanism lock
─
─
Indoor PCB
Fan motor
H21
Indoor float switch operation abnormal
─
─
─
H23
Indoor heat exchanger temperature
sensor 1 abnormality
Continue for 5 sec.
O
(Cooling only)
Heat exchanger temperature sensor 1
(defective or disconnected)
H24
Indoor heat exchanger temperature
sensor 2 abnormality
Continue for 5 sec.
─
Heat exchanger temperature sensor 2
(defective or disconnected)
H27
Outdoor air temperature sensor
abnormality
Continue for 5 sec.
O
Outdoor temperature sensor
(defective or disconnected)
H28
Outdoor heat exchanger temperature
sensor 1 abnormality
Continue for 5 sec.
O
Outdoor heat exchanger temperature
sensor (defective or disconnected)
H30
Discharge temperature sensor
abnormality
Continue for 5 sec.
─
Discharge temperature sensor
H32
Outdoor heat exchanger temperature
sensor 2 abnormality
Continue for 5 sec.
─
Discharge pipe temperature sensor
(defective or disconnected).
H34
Outdoor heat sink temperature sensor
abnormality
Continue for 2 sec.
─
Outdoor heat sink temperature sensor
(defective or disconnected).
H35
Indoor drain water adverse current
abnormal
─
─
─
H36
Gas pipe temperature sensor abnormality
Continue for 5 sec.
─
Gas pipe temperature sensor
(defective or disconnected).
H37
Outdoor liquid pipe temperature sensor
abnormality
Continue for 2 sec.
─
Outdoor liquid pipe temperature
sensor (defective or disconnected).
H39
Abnormal indoor operating unit or standby
units
─
─
─
H41
Wiring or piping connection abnormality
3 minutes after
compressor start up
─
─
H64
Outdoor high pressure sensor
abnormality
Continue for 1 minute
─
High pressure sensor
Lead wire and connector
H97
Outdoor Fan Motor lock abnormality
2 times occurrence
within 30 minutes
─
Outdoor PCB
Outdoor Fan Motor
H98
Indoor high pressure protection
─
─
Air filter dirty
Air circulation short circuit
H99
Indoor heat exchanger anti-freezing
protection
─
─
Insufficient refrigerant
Air filter dirty
F11
4-way valve switching failure*
4 times occurrence
within 30 minutes
─
4-way valve
V-coil
F17
Indoor unit freezing error
3 times occurrence
within 30 minutes
─
Expansion valve leakage
Indoor unit pipe temperature sensor
(check for changes in characteristics
and check its resistance)
F90
PFC control
4 times occurrence
within 10 minutes
─
Voltage at PFC
F91
Refrigeration cycle abnormality
2 times occurrence
within 20 minutes
─
No refrigerant
(3-way valve is closed)
F93
Outdoor compressor abnormal revolution
4 times occurrence
within 20 minutes
─
Outdoor compressor
F94
Compressor discharge pressure
overshoot protection
4 times happen
within 30 minutes
─
Check refrigerant system
F95
Cool high pressure protection
4 times occurrence
within 20 minutes
─
Outdoor refrigerant circuit