54
10.2. Error Codes Table
Abnormality / Protection control
Abnormality
Judgement
Emergency
operation
Primary location to verify
Note
Diagnosis
display
H11 Indoor / outdoor abnormal
communication
> 1 min after starting
operation
Indoor fan
operation only
(single type only)
• Internal / external cable
connections
• Indoor / Outdoor PCB
H12 Indoor unit capacity unmatched — — • Indoor units total capacity Multi type
only
H14 Indoor intake air temperature sensor
abnormality
— — • Intake air temperature
sensor (defective or
disconnected)
H15 Outdoor compressor temperature sensor
abnormality
Continue for 5 sec. — • Compressor temperature
sensor (defective or
disconnected)
Single
type only
H16 Outdoor Current Transformer open
circuit
— — • Decreased amount of
refrigerant
• Outdoor PCB
H19 Indoor fan motor merchanism lock — —
• Fan motor
• Indoor PCB
H23 Indoor heat exchanger temperature
sensor abnormality
Continue for 5 sec. — • Heat exchanger temperature
sensor (defective or
disconnected)
H27 Outdoor air temperature sensor
abnormality
Continue for 5 sec. O
(Single type only)
• Outdoor temperature sensor
(defective or disconnected)
H28 Outdoor heat exchanger temperature
sensor abnormality
Continue for 5 sec. O
(Single type only)
• Outdoor heat exchanger
temperature sensor
(defective or disconnected)
H30 Outdoor discharge temperature sensor
abnormality
Continue for 5 sec. — • Outdoor discharge
temperature sensor
(defective or disconnected)
H32 Outdoor discharge temperature sensor 2
abnormality
Continue for 5 sec. — • Outdoor discharge
temperature sensor 2
(defective or disconnected)
Multi type
only
H33 Indoor/Outdoor wrong connection — — • Indoor/Outdoor supply
voltage
H34 Outdoor heatsink temperature sensor at
Control Board
Continue for 2 sec. — • Outdoor heatsink
temperature sensor at
Control Board (defective or
disconnected)
Multi type
only
H36 Outdoor gas pipe temperature sensor
abnormality
Continue for 2 sec. — • Outdoor gas pipe
temperature sensor
(defective or disconnected)
Multi type
only
H37 Outdoor liquid temperature sensor
abnormality
Continue for 2 sec. — • Outdoor liquid temperature
sensor (defective or
disconnected)
Multi type
only
H38 Indoor/Outdoor mismatch (brand code) — —
H39 Abnormal indoor operating unit or
standby units
— — • Piping connection error
• Indoor/Outdoor cable
connection error
Multi type
only
H41 Abnormal wiring or piping connection — — • Wiring or piping connection CU-
2E15GBE
H97 Outdoor Fan Motor lock abnormality — —
• 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 Cooling / Heating cycle changeover
abnormality
4 times occurance
within 30 minutes
— • 4-way valve
• V-coil
F17 Indoor standby units freezing — — • Outdoor expansion valve
leakage
• Indoor unit pipe temperature
sensor
Multi type
only
F90 PFC control — — • Outdoor PCB
• Outdoor Fan Motor
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