Panasonic Cs W7ckp Cs W9ckp Cs W7ckp Series Repair Manual

							Time DelaySafety Control
Starting Current Control
Anti-Freezing Control
Compressor Reverse Rotation Protection Control
Compressor Protection Control
Automatic Fan Speed Mode
8.2. Soft Dry Mode Operation
 • The unit starts cooling operation until the room temperature reaches the setting temperature set on the Remote Control, and
then Soft Dry operation will start.
 • During Soft Dry operation, the Indoor Fan will operate at Lo- speed.
 • The operation will be switched on and off for up to 10 minutes“ON”and 6 minutes“OFF”. Once Soft Dry operation is turned
off, it stops for 6 minutes.
 • Once the compressor stops, it will not start for 3 minutes during Cooling operation.
 • Same as Starting Current Control for Cooling Mode operation.
 • Same as Anti-Freezing Control for Cooling Mode operation. (For Soft Dry region, 6 minutes waiting is valid during compressor
stops.)
 • Same as Compressor Reverse Rotation Protection Control for Cooling Mode Operation. (For Soft Dry region, 6 minutes waiting
is valid during compressor stops.)
 • Same as Compressor Protection Control for Cooling Mode Operation.
WhenAutomatic Fan Speed is selected at Remote Control during Soft Dry operation.
 • Fan speed rotates at Lo- speed.
 • Deodorizing Control.
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CS-W7CKP CU-W7CKP 5 / CS-W9CKP CU-W9CKP 5 / CS-W12CKP CU-W12CKP5 
						

							Soft Dry Operation Time Diagram
Quiet Operation Control
(For Dry region at Soft Dry Mode)
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CS-W7CKP CU-W7CKP 5 / CS-W9CKP CU-W9CKP 5 / CS-W12CKP CU-W12CKP5 
						

							Heating in operation according to Remote Control setting.
Time DelaySafety Control
30 minutes TimeSave Control
Overload Protection Control
(b) Compressor high pressure protection
Compressor Reverse Rotation Protection Control
4-way Valve Control
Outdoor Fan Motor Control
Indoor Fan Motor Control
8.3. Heating Mode Operation
 • W hen the compressor is stopped by Remote Control, it restarts after 3 minutes when the Remote Control is turned ON.
 • W hen the setting temperature is reached during heating operation, the compressor stops and it will not start for 4 minutes.
 • The compressor will start automatically if it has stopped for 30 minutes even if the room temperature is between the compressor
ON temperature and OFF temperature.
(a) Outdoor Fan Control
 • If the temperature of the indoor heat exchan ger rises to 51°C, Outdoor Fan stops.
The Outdoor Fan restarts when the indoor heat exchan ger temperature falls to 49°C.
 • If the indoor heat exchan ger becomes 65°C or more, the compressor will stop and restart automatically.
(Time Delay Safety Control - 4minutes waiting).
 • If the compressor is operating continuously for 5 minutes or longer andtemperature differen ce between intake air and indoor
heat exchan ger is 5°C or less for 2 minutes, compressor will stop and restart automatically.
(Time Delay Safety Control is valid).


T = Indoor heat exchanger temperature - intake air temperature.
This is to protect reverse rotation of the compressor when there is a instantaneous power failure.
 • 4-way valve always ON during Heating operation. (Except Deicing operation)
 • W hen the unit is switched to“OFF”during Heating operation, 4-way valve stay at Heating position for 5 minutes.
 • W hen compressor stops (reaches room temperature), outdoor fan will operate for 30 seconds.
(30 seconds Forced Operation).
 • W hen compressor stops (reaches room temperature), indoor fan will stop for 1 minutes, operate for 3 minutes, if still not yet
reaches the room temperature, indoor fan Lo- for 40 sec. after that operate at SLo speed.
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CS-W7CKP CU-W7CKP 5 / CS-W9CKP CU-W9CKP 5 / CS-W12CKP CU-W12CKP5 
						

							Hot Start Control
Anti Cold Draft Control
WhenHeating operation starts, Indoor Fan will not start until the indoor heat exchan ger reaches 30°C as diagram shown.
Hot Start is completed when indoor heat exchan ger rises to 39°C or over 4 minutes.
 • This operation is to prevent the Cold Draft during Heating mode operation.
 • The operation will start when compressor OFF (Thermo OFF) during Heating operation.
 • For the first 30 sec. from compressor OFF (Thermo OFF), Indoor fan speed will operate accordingly to the Indoor heat
exchan ger temperature as shown below:
 • After 30 sec. from compressor OFF (thermo OFF), Indoor fan will run atSSLo speed only.
 • Anti Cold Draft Control will stop when:
 − Intake temperature < set temperature. (TimeDelay Safety Control 4minutes waiting is valid)
 − After 30 minutes time saved control.
(refer to next page).
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CS-W7CKP CU-W7CKP 5 / CS-W9CKP CU-W9CKP 5 / CS-W12CKP CU-W12CKP5 
						

							Automatic Fan Speed Mode
Heating Operating Time Diagram
WhenAutomatic Fan Speed is selected at Remote Control during heating operation.
 • Fan speed rotates in the range of Me
→SLo according to the heat exchan ger temperature.
 • If use Manua l Fan Speed,at above diagram will operate with setting Fan Speed.
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CS-W7CKP CU-W7CKP 5 / CS-W9CKP CU-W9CKP 5 / CS-W12CKP CU-W12CKP5 
						

							Deicing Control
Deice starts to prevent frosting at outdoor heat exchan ger.
 • Normal Deicing
Deice operations detection commences after 30 minutes of Heating operation starts or 60 minutes after previous deice
operation. If the TRS (Thermal Reed Switch) senses the outdoor piping temperature drops to -3°C (TRS CLOSE) or less for
50 sec. continuously during compressor is in operation, deice willstart.
(There is no detection during Outdoor Fan stops.)
 • Overload Deicing
During heating operation, if the outdoor Fan OFF duration (due to overload control) is accumulated up to 60 minutes and
after compressor starts for 1 minutes, deicing starts.
 • Deicing ends when
 1. 12 minutes after deicing operation starts;
 2. TRS senses the outdoor piping temperature rises to 4°C (TRS OPEN).
 3. Deicing will not end immediately as time delay (Td) is valid as shown below.
 • Once deicing operation starts, it will not end for 60 seconds.
 • After deicing operation, compressor stops for 30 seconds and 4-way valve stays at cooling position for 10 seconds.
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CS-W7CKP CU-W7CKP 5 / CS-W9CKP CU-W9CKP 5 / CS-W12CKP CU-W12CKP5 
						

							Normal Deicing Time Diagram
Overload Deicing Time Diagram
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CS-W7CKP CU-W7CKP 5 / CS-W9CKP CU-W9CKP 5 / CS-W12CKP CU-W12CKP5 
						

							Quiet Operation Control
(For Heating Mode)
 • Purpose of this operation is to provide quite heating operation compare to normal operation.
 • W hen the Quiet Mode is set at the remote control, Quiet Mode LED illuminates, the sound level will be automatically
decreased 2 dB (Lo), decreased 3 dB (Hi, Me), against the present sound level operation.
 • Quiet setting of fan speed rpm refer to Indoor Fan Speed Control.
 • Manual Airflow Direction:-
 − Rpm control during Lo, Me & Hi Cool
 • Auto Airflow Direction:-
 − Rpm control depend s on the piping air temperature sensor of Indoor heat exchan ger
 • Quiet Mode Operation will stop if:-
 − Quiet mode button is pressed again.
 − Stopped by ON/OFF switch.
 − Timer OFF activates.
 − Powerful mode button is pressed.
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CS-W7CKP CU-W7CKP 5 / CS-W9CKP CU-W9CKP 5 / CS-W12CKP CU-W12CKP5 
						

							8.4. Automatic Mode Operation
 1. When theAutomatic Mode Operation is selected, the indoor fan operates at SLo fan speed for 25 seconds to sense intake air
temperature and determine the 1st operation mode.
 2. Operation mode will be determine again after 1 hour of operation, if the room temperature reaches to set temperature and
compressor off time is over 7 minutes 30 seconds continuously.
The present operation mode will be continued, if the room temperature does not reach to set temperature (Compressor keeps running)
eventhough after 1 hour from automatic operation mode started.
PresentJudgementNext Mode
ModeCoolingSoft DryHeating
OO
Cooling23°CCooling(Judgement:Not Applicable(Judgement:
Heating23°C & Above)Below 23°C)
OO
Soft Dry20°CSoft DryNot Applicable(Judgement:(Judgement:
Heating20°C & Above)Below 20°C)
OO
HeatingCooling(Judgement:Not Applicable(Judgement:
25°CHeatingAbove 25°C)25°C & below)
Automatic Set Temperature
Refer 3. as below.
 3. Automatic Set Temperature
For each operation, set temperature will automatically set as shown below.
However it can be selected 2°C higher or 2°C lower from standard set temperature by pressing the“Room Temperature Setting
button”.
OperationHi(Standard)Lo
(+2°C)(±0°C)(-2°C)
Cooling27°C25°C23°C
Soft Dry24°C22°C20°C
Heating23°C21°C19°C
 • The mode judging temperature and standard setting temperature can be increased by 2°C, by open the circuit of JX1 at
indoor electronic controller.
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							8.5. Random Auto Restart Control
 • If there is a power failure during air conditio ner operation, operation will be automatically restarted after 3 to 4 minutes when the
power is resumed. It will start with previous operation mode and airflow direction.
 • Restart time is decided randomly using 4 parameter:
Intake air temperature, setting temperature, fan speed and Air Swing Blade position .
 • Random Auto Restart Control is not available when Timer is set.
 • This control can be omitted by open the circuit of JX2. (Refer Circuit Diagram)
8.6. Delay ON Timer Control
 • W hen the Delaye d ON Timer is set by using theremote control, the unit will start operate slightly before the set time, so that
the room will reach nearly to the set temperature by the desired time.
 • For Cooling and Soft Dry mode, the operation will start 15 minutes before the set time.
 • For Heating mode, the operation will start 30 minutes before the set time.
 • For Automatic mode, the indoor fan will operate at SLo speed for 25 seconds, 30 minutes before the set time to detect the
intake air temperature to determine the operation mode. The operation indication lamp will blink at this time.
8.7. Remote Control Signal Receiving Sound
 • Long beep sound will be heard when:-
 − Stopping the Air Conditioner using ON/OFF switch.
 − Stopping the Quiet Mode.
 − Stopping the Powerful Mode.
 − Stopping the Ion Mode.
 • Short beep sound will be heard for others.
 • To switch off the beep sound:-
Press the“Automatic Operation Button”continuously for 10 seconds or more (“beep”“beep”will be heard at the 10th second).
Repeat the above if you want to switch ON the beep sound.
However, if the“Automatic Operation Button”has been pressed the Automatic operation will be activated.
If you do not require this operation, you may change it by using the remote control.
8.8. Indoor Fan Speed Control
Auto Fan Speed Control
When set toAuto Fan Speed, the fan speed is shifted automatically between Stop to SHi depend on each operation as shown
below.
Manua l Fan Speed Control
Basic fan speed adjustment (3 settings, from Lo to Hi) can be carried out by using the Fan Speed selection button at the remote
control.
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CS-W7CKP CU-W7CKP 5 / CS-W9CKP CU-W9CKP 5 / CS-W12CKP CU-W12CKP5