Panasonic CS-PW18MKD / CS-PW24MKD / CU-PW18MKD / CU-PW24MKD Service Manual ▷ View online
33
12.4 Automatic Operation
• Automatic operation can be set using remote control.
• This operation starts to operate with indoor fan at SLo speed for 25 seconds to judge the intake air temperature.
• After judged the temperature, the operation mode is determined by referring to the below standard.
• Then, the unit starts to operate at determined operation mode, until it is switched off using remote control, with
the setting temperature as shown in table below.
Setting Temperature (Standard)
Cooling Operation
25°C
Soft Dry Operation
22°C
Heating Operation
21°C
• Operation mode will be determine again for judgement 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.
* 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.
Standard for Determining Operation Mode
2nd Judgement onwards
Next Mode
Present Mode
Judgement
Cooling Soft
Dry Heating
Cooling
23°C
Heating
Cooling
O
(Judgement:
23°C & Above)
Not Applicable
O
(Judgement:
Below 23°C)
Below 23°C)
Soft Dry
20°C
Heating
Soft Dry
Not Applicable
O
(Judgement:
20°C & Above)
O
(Judgement:
Below 20°C)
Below 20°C)
Cooling
25°C
Heating
Heating
O
(Judgement:
25°C & Above)
Not Applicable
O
(Judgement:
Below 25°C)
Below 25°C)
• Automatic Set Temperature
For each operation, set temperature will automatically set as shown below.
• The setting temperature for all the operations can be changed one level up or one level down from the standard
temperature as shown in below table by pressing on the temperature up or temperature down button at remote
control.
control.
Hi (Standard) Lo
Operation
(+2°C) (±0°C) (-2°C)
Cooling 27°C
25°C
23°C
Soft Dry
24°C
22°C
20°C
Heating 23°C
21°C
19°C
Cooling Operation
Soft Dry Operation
↑
Intake Air
Temperature
23°C
20°C
Heating Operation
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• The operation mode judging temperature and standard setting temperature can be increased by 2°C
permanently, by open the circuit of JX03 at indoor unit’s printed circuit board.
12.5 Indoor Fan Speed Control
• Indoor fan speed can be set using remote control.
12.5.1 Fan Speed Rotation Chart
Speed
Cool, Dry
Heat
CS-PW18MKD CS-PW24MKD
SHi Hi 1310
1530
Hi
1280
1390
Me Me 1200
1270
Lo+ Lo 1180
1230
Lo
1120
1150
Lo- Lo- 910 940
SLo SLo 700 720
SSLo
300 300
12.5.2 Automatic Fan Speed Control
• When set to Auto Fan Speed, the fan speed is adjusted between maximum and minimum setting as shown in the
table.
o
o
Fan speed rotates in the range of Hi, Me and Lo-.
o
Deodorizing Control will be activated.
Speed Mode
SHi
Hi
Me
Lo+
Lo
Lo-
SLo
SSLo
Stop
Hi
o
Me
o
Manual
Lo
o
Cooli
ng
Normal
Auto
o
o
o
o
Manual o o
Dr
y
Auto
o
o
Hi
o
o
o
o o
Me
o o o o o
Manual
Lo
o o o o o
Heatin
g
Normal
Auto
o o o o o o
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• Auto Fan Speed during cooling operation:
1 Indoor fan will rotate alternately between off and on as shown in below diagram.
2 At the beginning of each compressor starts operation, indoor fan speed increases gradually for deodorizing
2 At the beginning of each compressor starts operation, indoor fan speed increases gradually for deodorizing
purpose.
3 For the first time the compressor operates, indoor fan will be switched to Hi fan speed from Lo- after 70
seconds from the start of compressor. This cause the room temperature to achieve the setting temperature
quickly.
quickly.
4 During compressor stops, indoor fan will operate at Lo- for the beginning 20 seconds to prevent higher
volume of refrigerant in liquid form returning to the compressor.
5 After the compressor turned off for 3 minutes, indoor fan will start to operate at Lo- to circulate the air in the
room. This is to obtain the actual reading of the intake air temperature.
6 For the resume of compressor operation, indoor fan will operate at Me fan speed to provide comfort and
lesser noise environment, after 70 seconds from the restarts of compressor.
• Auto Fan Speed during Soft Dry operation.
o
Indoor fan will rotate alternately between off and Lo-.
o
At the beginning of each compressor starts operation, indoor fan will increase fan speed gradually for
deodorizing purpose.
o
When compressor turned off for 6 minutes, indoor fan will start at Lo- to circulate the air in the room. This is
to obtain the actual reading of intake air temperature.
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• Auto Fan Speed during Heating operation.
o
Indoor fan will rotate in the range of SLo → Me according to the heat exchanger temperature.
12.5.3 Manual Fan Speed Control
• Manual fan speed adjustment can be carried out by using the Fan Speed selection button at the remote control.
• There are 3 types of fan speed settings: Lo, Me, Hi.
12.6 Outdoor Fan Speed Control
• There is only one speed for outdoor fan motor. (Apply for PW18MK).
• There is 2 speeds for outdoor fan motor. Outdoor fan speed can be changed to Hi or Lo according to outdoor
temperature (Apply for PW24MK).
• For Cooling and Soft Dry operation, when outdoor temperature reaches to 31°C (Hi-speed), 29°C (Lo-speed).
• For heating operation, when outdoor temperature reaches to 13.5°C (Hi-speed), 15.5°C (Lo-speed).
• When air conditioner is turned on, the compressor and the outdoor fan will operate simultaneously.
• Likewise, both compressor and outdoor fan will stop at the same time if the unit is turned off.
12.7 Vertical Airflow Direction Control
12.7.1 Auto
Control
(Cooling and Soft Dry Operation Condition)
• When the vertical airflow direction is set to Auto using the remote control, the louver swings up and down as
shown in the diagram.
• When stops operation using the remote control, the discharge vent is reset and stops at the closing position.
• During Cooling operation or Soft Dry operation, indoor fan motor may stop to rotate at certain periods. At that
condition, the louver will stop swinging.
Upper limit for cooling mode
and soft dry mode/17°
and soft dry mode/17°
22°
Closing
position
/ 148°
position
/ 148°
Swing up and down
Lower limit for cooling mode and
soft dry mode/39°
soft dry mode/39°
Horizontal
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