Panasonic Cs W7bkp Cs W9bkp Cs W12bkp Repair Manual

							Soft Dry Operation Time Diagram
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							Heating in operation according to Remote Control setting.
Time Delay Safety Control
30 minutes Time Save Control
Overload Protection Control
Compressor Reverse Rotation Protection Control
4-way Valve Control
Outdoor Fan Motor Control
Indoor Fan Motor Control
8.3. Heating Mode Operation
 • When the compressor is stopped by Remote Control, it restarts after 3 minutes when the Remote Control is turned ON.
 • When the setting temperature is reached during heating operation, the compressor stops and it will not start for 4 minutes.
 • The compressor will startautomatically if it has stopped for 30 minutes evenif the room temperature is between the compressor
ON temperature and OFF temperature.
(a) Outdoor Fan Control
 • If the temperature of the indoor heat exchanger rises to 51°C, Outdoor Fan stops.
The Outdoor Fan restarts when the indoor heat exchanger temperature falls to 49°C.
(b) Compressor high pressure protection
 • If the indoor heat exchanger becomes 65°C ormore, the compressor willstop and restart automatically.
(Time Delay Safety Control- 4 minutes waiting).
 • If the compressor is operating continuously for 5 minutes or longer and temperature difference between intake air and indoor
heat exchanger is 5°C or less for 2minutes, compressor will stopand restart automatically.
(Time DelaySafety Controlis valid).
sT = Indoor heat exchanger temperature - intake air temperature.
This is to protect reverse rotation of the compressor when there is a instantaneous power failure.
 • 4-wayvalvealways ONduring Heating operation. (Except Deicing operation)
 • When the unit is switched to “OFF” during Heatingoperation,4-wayvalve stay at Heatingposition for 5 minutes.
 • When compressor stops (reaches room temperature),outdoor fan will operate for 30 seconds.
(30 seconds Forced Operation).
 • When 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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							Hot Start Control
Anti ColdDraft Control
When Heating operation starts, Indoor Fan will not start until the indoor heat exchanger reaches 30°C as diagram shown.
Hot Start is completed when indoor heat exchanger 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
exchanger temperature as shown below:
 • After 30 sec. from compressor OFF (thermo OFF),Indoor fan will run at SSLo speed only.
 • Anti Cold Draft Control will stop when:
 − Intake temperature < set temperature. (Time DelaySafety Control 4minutes waiting is valid)
 − After 30 minutes time saved control.
(see page 24).
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							Automatic Fan Speed Mode
Heating Operating Time Diagram
When Automatic Fan Speed is selected at Remote Control during heating operation.
 • Fan speed rotates in the range of Me→SLo according to the heat exchanger temperature.
 • If use Manual Fan Speed,at above diagram will operate with setting Fan Speed.
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							Deicing Control
Deice starts to prevent frosting at outdoor heat exchanger.
 • 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 outdoorpiping temperature drops to -3°C (TRS CLOSE) or less for
50 sec. continuously during compressor isin operation, deice will start.
(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 secondsand 4-wayvalve stays at cooling position for 10 seconds.
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							Normal Deicing Time Diagram
Overload Deicing Time Diagram
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							8.4. Automatic Mode Operation
 1. When the Automatic 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 7minutes 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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							Cooling or Soft Dry Operation
Purpose is to obtain a comfortable room temperature while
sleeping. When you press the SLEEP Mode, the following
movement will start to avoid overcooling.
 • Sleep shift operation starts, when the room temperature
reaches the setting temperature or after 1 hour of operation.
 • The setting temperature will be risen by0.5°C at the start of
operation and by0.5°C one hour later .
 • The airflow volume will automatically change to Lo fan
speed.
 • Sleep Mode operation time is8hours, the operation will be
stop after8hour.
 • W hen used together with the Timer, the Timer has priority.
Heating Operation
Purpose is to obtain a comfortable room temperature while
sleeping. When you press the SLEEP Mode, the following
movement will start to avoid overheating.
 • Sleep shift operation starts, when the room temperature
reaches the setting temperature or after 1 hour of operation.
 • The setting temperature will be decrease by2°C at the start
of operation and by3°C one hour later.
 • The airflow volume will automatically change to Lo fan
speed. The fan speed refer to Indoor Fan Motor Control.
 • Sleep Mode operation time is8hours, the operation will be
stop after8hour.
 • W hen used together with the Timer, the Timer has priority.
8.5. Sleep Mode Auto Operation
8.6. Random Auto Restart Control
 • If there is a power failure, operation will be automatically restarted after 3 to 5 1/2 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 or Sleep Mode is set.
 • This control can be omitted by open the circuit of JX2. (Refer Circuit Diagram)
8.7. Delay ON Timer Control
 • When the Delayed ON Timer is set by using the remote 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.
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							8.8. Remote Control Signal Receiving Sound
 • Long beep sound will be heard when:-
 − Stopping the Air Conditioner using ON/OFF switch.
 − Stopping the Sleep Mode.
 − Stopping the Powerful Mode.
 − Stopping the Economy Mode.
 • Short beep sound will be heard for others.
 • To switch off the beep sound:-
Press the “Automatic Operation Button” continuously for 10 seconds ormore (“beep” “beep” will beheard 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.
8.9. Indoor Fan Speed Control
Auto Fan Speed Control
When set to Auto Fan Speed, the fan speed is shifted automatically between Stop to SHi depend on each operation as shown
below.
Manual 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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							 1. Vertical Airflow Direction
 • The louver swings up and down as shown above.
 • The louver does not swing when the Indoor Fan stops
during operation at the upper limit.
Heating Mode
 • When the intake air temp. reaches 38°C, the louver is
changed from upper to lower limit. When the intake air
temp falls to 35°C, the louver is changed from lower to
upper limit.
 2. Horizontal Airflow Direction
 • The louver can be selected between 14° - 36° (as
shown above) when pressing Manual Airflow Direction
Selection Button.
 • The louver can be selected between 0° - 61° (as shown
above) when pressing Manual Airflow Direction
Selection Button.
8.10. Airflow Direction Control
Cooling and Soft Dry Mode
 • The left and right airflow direction louvers can be adjusted manually.
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