Panasonic CS-E21HKDS / CS-E24HKDS / CU-E21HKD / CU-E24HKD Service Manual ▷ View online
57
15.4. Error Codes Table
Note:
“O” - Frequency measured and fan speed fixed.
“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.
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.
Abnormality / Protection control
Abnormality
Judgement
Emergency
operation
Primary location to verify
Diagnosis
display
H00
No abnormality detected
—
Normal operation
—
H11
Indoor / outdoor abnormal
communication
communication
> 1 min after starting
operation
operation
Indoor fan operation
only
• Internal / external cable connections
• Indoor / Outdoor PCB
• Indoor / Outdoor PCB
H12
Connection capability rank abnormal
—
—
—
H14
Indoor intake air temperature sensor
abnormality
abnormality
Continue for 5 sec.
—
• Intake air temperature sensor
(defective or disconnected)
H15
Outdoor compressor temperature sensor
abnormality
abnormality
Continue for 5 sec.
—
• Compressor temperature sensor
(defective or disconnected)
H16
Outdoor Current Transformer open
circuit
circuit
—
—
• Outdoor PCB
• IPM (Power transistor) module
• IPM (Power transistor) module
H19
Indoor fan motor merchanism lock
—
—
• Indoor PCB
• Fan motor
• Fan motor
H23
Indoor heat exchanger temperature
sensor abnormality
sensor abnormality
Continue for 5 sec.
O
(Cooling only)
• Heat exchanger temperature sensor
(defective or disconnected)
H25
E-Ion breakdown
—
—
• Indoor PCB
• E-Ion PCB
• E-Ion PCB
H27
Outdoor air temperature sensor
abnormality
abnormality
Continue for 5 sec.
O
• Outdoor temperature sensor (defective
or disconnected)
H28
Outdoor heat exchanger temperature
sensor abnormality
sensor abnormality
Continue for 5 sec.
O
• Outdoor heat exchanger temperature
sensor (defective or disconnected)
H30
Discharge temperature sensor
abnormality
abnormality
—
—
—
H33
Indoor/Outdoor wrong connection
—
—
• Indoor/Outdoor supply voltage
H38
Indoor/Outdoor mismatch
—
—
—
H58
Abnormal gas sensor
Continue for 6 hours
—
• Gas sensor
(defective or disconnected)
H97
Outdoor Fan Motor lock abnormality
—
—
• Outdoor PCB
• Outdoor Fan Motor
• Outdoor Fan Motor
H98
Indoor high pressure protection
—
—
• Air filter dirty
• Air circulation short circuit
• Air circulation short circuit
H99
Indoor heat exchanger anti-freezing
protection
protection
—
—
• Insufficient refrigerant
• Air filter dirty
• Air filter dirty
F11
Cooling / Heating cycle changeover
abnormality
abnormality
4 times occurance
within 30 minutes
within 30 minutes
—
• 4-way valve
• V-coil
• V-coil
F90
PFC control
4 times occurance
within 10 minutes
within 10 minutes
—
• Voltage at PFC
F91
Refrigeration cycle abnormality
7 times occurance
continuously
continuously
—
• No refrigerant
(3-way valve is closed)
F93
Outdoor compressor abnormal revolution
4 times occurance
within 20 minutes
within 20 minutes
—
• Outdoor compressor
F95
Cool high pressure protection
4 times occurance
within 20 minutes
within 20 minutes
—
• Outdoor refrigerant circuit
F96
IPM (power transistor) overheating
protection
protection
—
—
• Excess refrigerant
• Improper heat radiation
• IPM (Power transistor)
• Improper heat radiation
• IPM (Power transistor)
F97
Outdoor compressor overheating
protection
protection
4 times occurance
within 20 minutes
within 20 minutes
—
• Insufficient refrigerant
• Compressor
• Compressor
F98
Total running current protection
3 times occurance
within 20 minutes
within 20 minutes
—
• Excess refrigerant
• Improper heat radiation
• Improper heat radiation
F99
Outdoor Direct Current (DC) peak
detection
detection
7 times occurance
continuously
continuously
—
• Outdoor PCB
• IPM (Power transistor)
• Compressor
• IPM (Power transistor)
• Compressor
58
16 Disassembly and Assembly Instructions
16.1. Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor
Removal Procedures
16.1.1.
To remove front grille
16.1.2.
To remove power electronic controller
WARNING
High Voltage 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.
with repair work. Failure to heed this caution may result in electric shocks.
59
60
16.1.3.
To remove discharge grille
16.1.4.
To remove control board
Click on the first or last page to see other CS-E21HKDS / CS-E24HKDS / CU-E21HKD / CU-E24HKD service manuals if exist.