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Note:
“O” - Frequency measured and fan speed fixed.

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
Codes Table) by using Remote Control or Auto Switch at indoor unit. However, the Remote Control signal receiving sound is
changed from one “beep” to four “beep” sounds.

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

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 merchanism lock

—

—

• Indoor PCB
• Fan motor

H23

Indoor heat exchanger temperature 
sensor abnormality

Continue for 5 sec.

O

 (Cooling only)

• Heat exchanger temperature sensor 

(defective or disconnected)

H26

Ion abnormality

—

—

• Indoor PCB
• Ionizer

H27

Outdoor air temperature sensor 
abnormality

Continue for 5 sec.

O

• Outdoor temperature sensor 

(defective or disconnected)

H28

Outdoor heat exchanger temperature 
sensor abnormality

Continue for 5 sec.

O

• Outdoor heat exchanger temperature 

sensor (defective or disconnected)

H30

Discharge temperature sensor 
abnormality

—

—

—

H33

Indoor/Outdoor wrong connection

—

—

• Indoor/Outdoor supply voltage

H38

Indoor/Outdoor mismatch

—

—

—

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

Cooling / Heating cycle changeover 
abnormality

4 times occurance 
within 30 minutes

—

• 4-way valve
• V-coil

F90

PFC control

4 times occurance 
within 10 minutes

—

• Voltage at PFC

F91

Refrigeration cycle abnormality

7 times occurance 
continuously

—

• No refrigerant

(3-way valve is closed)

F93

Outdoor compressor abnormal revolution

4 times occurance 
within 20 minutes

—

• Outdoor compressor

F95

Cool high pressure protection

4 times occurance 
within 20 minutes

—

• Outdoor refrigerant circuit

F96

IPM (power transistor) overheating 
protection

—

—

• Excess refrigerant
• Improper heat radiation
• IPM (Power transistor)

F97

Outdoor compressor overheating 
protection

4 times occurance 
within 20 minutes

—

• Insufficient refrigerant
• Compressor

F98

Total running current protection

3 times occurance 
within 20 minutes

—

• Excess refrigerant
• Improper heat radiation

F99

Outdoor Direct Current (DC) peak 
detection

7 times occurance 
continuously

—

• Outdoor PCB
• IPM (Power transistor)
• Compressor

50

High voltages are generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding
with repair work. Failure to heed this caution may result in electric shocks.

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