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16.3 Error Code 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
connection
Indoor / outdoor PCB
H12
Connection capability rank abnormality
Continuously for 90 sec
after power supplied
-
-
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 locked
7 occurrences
continuously
-
Indoor PCB
Fan motor
H23
Indoor heat exchanger temperature
sensor abnormality
Continue for 5 sec.
○
Heat exchanger temperature
sensor (defective or disconnected)
H25
nanoe-G abnormality
-
○
Indoor PCB
nanoe-G PCB
H27
Outdoor air temperature sensor
abnormality
Continue for 5 sec.
○
Outdoor temperature sensor
(defective or disconnected)
H28
Outdoor heat exchanger temperature
sensor abnormality
Continue for 5 sec.
○
Outdoor heat exchanger
temperature sensor (defective or
disconnected)
H30
Discharge temperature sensor
abnormality
Continue for 5 sec.
-
Outdoor discharge temperature
sensor (defective or disconnected)
H33
Indoor / outdoor wrong connection
-
-
Indoor / outdoor supply voltage
H38
Indoor / outdoor mismatch (brand code)
-
-
-
H97
Outdoor fan lock abnormality
2 occurrences within 30
minutes
Outdoor fan motor locked
H98
Indoor temperature rise abnormality
-
-
Air filter dirty
Air circulation short circuit
H99
Indoor heat exchanger freeze prevention
protection
-
-
Insufficient refrigerant
Air filter dirty
F11
4 way valve switching failure *
4 occurrences within 30
minutes
-
4-way valve
v-coil
F90
System and compressor microcomputer
communication error (for VU9*** only)
2 occurrences within 5
seconds
-
Compressor
Outdoor PCB
F90
Power factor correction abnormality
4 occurrences within 20
minutes
-
Outdoor PCB
F91
Refrigerant cycle abnormal
2 occurrences within 20
minutes
-
No refrigerant (3-way valve is
closed)
F93
Outdoor compressor abnormal revolution
4 occurrences within 20
minutes
-
Outdoor compressor
F95
Cooling high pressure protection
4 occurrences within 20
minutes
-
Outdoor refrigerant circuit
F96
Intelligent power transistor overheating
protection
-
-
Excess refrigerant
Improper heat radiation
IPM (Power transistor)
F97
Compressor temperature rise protection
control
4 times occurrence within
20 minutes
-
Insufficient refrigerant
Compressor
F98
Total running current protection
3 times occurrence within
20 minutes
-
Excess refrigerant
Improper heat radiation
F99
Outdoor direct current (DC) peak
detection
7 times occurrence
continuously
-
Outdoor PCB
IPM (Power transistor)
Compressor
Note:
“○” – Frequency measured and fan speed fixed.
“ * ” – For cooling only model, it is the indication when indoor heat exchanger sensor or indoor air intake sensor has
abnormality.
The memory data of error code is erased when the power supply is cut off, or press the Auto Switch until “beep”
sound heard following by pressing the CHECK button at remote control.
Although operation forced to stop when abnormality detected, emergency operation is possible for certain errors
(refer to Error Code Table) by using remote control or Auto OFF/ON button at indoor unit. However, the remote
control signal receiving sound is changed from one “beep” to four “beep” sounds.
