Panasonic CS-SA7CKP / CU-SA7CKP5 / CS-SC7CKP / CU-SC7CKP5 Service Manual ▷ View online
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• Removal procedure of the cross flow fan
1. Remove the fan motor.
(Refer to the removal procedure of fan motor, Fig 8)
Remove the securing screw of the front grille, pull the
front grille down towards you.
front grille down towards you.
2. Loosen the bearing on the left side of the cross flow
fan.(Fig 9 )
3. Take off the securing-tabs to the left of the heat
exchanger.
Pull the heat exchanger forward (left side). (Fig 10)
The cross flow fan can be removed. (Fig 10)
Fig 8
Fig 9
Fig 10
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CS-SA7CKP / CU-SA7CKP5 / CS-SC7CKP / CU-SC7CKP5
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• Remote control reset
If the display is chaotic or can not be adjusted, use a pin to
gently press reset button to reset the remote control to the
original set by manufacturer.(Fig 11 )
gently press reset button to reset the remote control to the
original set by manufacturer.(Fig 11 )
Fig 11
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CS-SA7CKP / CU-SA7CKP5 / CS-SC7CKP / CU-SC7CKP5
Refrigeration cycle system
In order to diagnose malfunctions, make sure that there are no
electrical problems before inspecting the refrigeration cycle.
electrical problems before inspecting the refrigeration cycle.
Such problems include insufficient insulation, problem with the
power source, malfunction of compressor or fan.
power source, malfunction of compressor or fan.
The normal outlet air temperature and pressure of the
refrigeration cycle depends on various conditions, the standard
values for them are shown in the table to the right.
refrigeration cycle depends on various conditions, the standard
values for them are shown in the table to the right.
11 Trouble-shooting guide
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CS-SA7CKP / CU-SA7CKP5 / CS-SC7CKP / CU-SC7CKP5
11.1. Relationship between the condition of air conditioner and pressure
and electric current
Cooling mode
Heating mode
Condition of the air
conditioner
Low Pressure
High Pressure
Electric current
during operation
Low Pressure
High Pressure
Electric current
during operation
Insufficient refrigerant
(gas leakage)
Clogged capillary tube
Short circuit in the
indoor unit
Heat radiation deficiency
of the outdoor unit
Insufficient compression
11.2. Diagnosis methods of a malfunction of a compressor and a 4-way
valve
Nature of fault
Symptom
" Electric current during operation becomes approximately 80% lower than the normal level.
Insufficient compressing of a compressor
" The discharge tube of the compressor becomes abnormally hot (normally 70~90°C).
" The difference between high pressure and low pressure becomes almost zero.
" Electric current reaches a high level abnormally, and the value exceeds the limit of an ammeter.
In some cases, a breaker turns off.
In some cases, a breaker turns off.
Locked compressor
" The compressor has a humming sound.
" Electric current during operation becomes approximately 20% lower than the normal valve.
Inefficient switches of the 4-way valves
" The temperature difference between from the discharge tube to the 4-way valve and from
suction tube to the 4-way valve becomes almost zero.
suction tube to the 4-way valve becomes almost zero.
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CS-SA7CKP / CU-SA7CKP5 / CS-SC7CKP / CU-SC7CKP5
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