Error Codes Table - Panasonic CS-E18EKK Service Manual

12.4. Error Codes Table

Diagnosis Abnormality / Protection control
display
H00 No abnormality detected
H11 Indoor / outdoor abnormal
communication
H12 Connection capability rank abnormal
H14 Indoor intake air temperature sensor
abnormality
H15 Outdoor compressor temperature sensor
abnormality
H16 Outdoor Current Transformer open
circuit
H19 Indoor fan motor merchanism locked
H23 Indoor heat exchanger temperature
sensor abnormality
H27 Outdoor intake air temperature sensor
abnormality
H28 Outdoor heat exchanger temperature
sensor abnormality
H30 Outdoor discharge air temperature
sensor abnormality
H33 Indoor/Outdoor wrong connection
H38 Indoor / outdoor mismatch (brand code)
H97 Outdoor fan motor mechanism locked
H98 Indoor high pressure protection
H99 Indoor heat exchanger anti-freezing
protection
F11 Cooling / Heating cycle changeover
abnormality
F90 PFC control
F91 Refrigeration cycle abnormality
F93 Compressor rotation failure
F95 Cool high pressure protection
F96 IPM (power transistor) overheating
protection
F97 Outdoor compressor overheating
protection
F98 Total running current protection
F99 Outdoor Direct Current (DC) peak
detection
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 "RESET" button at remote controller.
Although operation forced to stop when abnormality detected, emergency operation is possible for certain errors (refer to Error
Codes Table) by using remote controller or Auto Switch at indoor unit. However, the remote controller signal receiving sound is
changed from one "beep" to four "beep" sounds.
Abnormality Emergency
Judgement operation
— Normal operation
> 1 min after starting Indoor fan operation
operation
—
Continue for 5 sec.
Continue for 5 sec.
—
—
Continue for 5 sec.
(Cooling only)
Continue for 5 sec.
Continue for 5 sec.
Continue for 5 sec.
—
—
2 times occurance
within 30 minutes
—
—
4 times occurance
within 30 minutes
4 times occurance
within 10 minutes
2 times occurance
within 20 minutes
—
4 times occurance
within 20 minutes
—
4 times occurance
within 10 minutes
3 times occurance
within 20 minutes
7 times occurance
continuously
37
CS-E18EKK CU-E18EKK / CS-E21EKK CU-E21EKK
Primary location to verify
• Internal / external cable connections
only
• Indoor / Outdoor PCB
—
• Intake air temperature sensor
—
(detective or disconnected)
• Compressor temperature sensor
—
(detective or disconnected)
• Outdoor PCB
—
• IPM (Power transistor) module
• Indoor PCB
—
• Fan motor
• Heat exchanger temperature sensor
O
(defective or disconnected)
• Outdoor temperature sensor
O
(defective or disconnected)
• Outdoor heat exchanger
O
temperature sensor (defective or
disconnected)
• Outdoor temperature sensor
—
(defective or disconnected)
• Indoor/Outdoor supply voltage
—
—
• Indoor PCB
—
• Fan motor
• Air filter dirty
—
• Air circulation short circuit
• Insufficient refrigerant
—
• Air filter dirty
• 4-way valve
—
• V-coil
• Voltage at PFC
—
• No refrigerant
—
(3-way valve is closed)
• Compressor
—
• Outdoor refrigerant circuit
—
• Excess refrigerant
—
• Improper heat radiation
• IPM (Power transistor)
• Insufficient refrigerant
—
• Compressor
• Excess refrigerant
—
• Improper heat radiation
• Outdoor PCB
—
• IPM (Power transistor)
• Compressor
—
—
—