Panasonic CS-W18MKD / CS-W24MKD / CU-W18MKD / CU-W24MKD 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.
Fan Speed Rotation Chart
Speed CS-W18MKD
CS-W24MKD
SHi 1310
1530
Hi 1240
1390
Me 1140
1270
HLo 1100
1230
CLo 1040
1150
Lo- 850
940
SLo 650
720
SSLo 300
300
QSHi 1220
1440
QHi 1150
1300
QMe 1050
1180
QHLo 950
1060
QLo 950
1060
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12.5.1 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
HLo
CLo
Lo-
SLo
SSLo
Stop
Hi
o
Me
o
Manual
Lo
o
Normal
Auto
o
o
o
o
Manual o
Cooli
ng
Powerful
Auto
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
Normal
Auto
o o o o o o
Manual
o o o o o o o
Heatin
g
Powerful
Auto
o o o o o o
Auto
Mode
Judgment
o
QHi
Hi
-90
QMe
Me
-90
Manual
QLo
CLo
-90
Cooli
ng
Quiet
Auto
Hi
-90
Me
-90
o o
Manual o o
Dr
y
Quiet
Auto
o
o
QHi
SHi
-100
o
o o o
QMe
Me
-90
o o o o
Manual
QLo
HLo
-170
o o o o
Heatin
g
Quiet
Auto
Me
-90
HLo
-170
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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