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CS-A7HKD CS-A9HKD CS-A12HKD CU-A7HKD CU-A9HKD CU-A12HKD
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78
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12.64 MB
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Service Manual
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Device
Air Conditioner / AIR CONDITIONER
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cs-a7hkd-cs-a9hkd-cs-a12hkd-cu-a7hkd-cu-a9hkd-cu-a.pdf
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Panasonic CS-A7HKD / CS-A9HKD / CS-A12HKD / CU-A7HKD / CU-A9HKD / CU-A12HKD Service Manual ▷ View online

33
12.3. Soft Dry Operation
• Soft Dry operation can be set using remote control.
• Soft Dry operation is applied to dehumidify and to perform a gentle cooling to the room.
• This operation starts when the intake air temperature sensor reaches the setting temperature on the remote control.
• When operation begins, Soft Dry will be switched “ON” for a maximum 10 minutes, then Soft Dry operation will be turned “OFF”
for a minimum 6 minutes. After that, the Soft Dry operation will be “ON” and “OFF” based on the setting temperature as shown in
below figure.
• However after 3 minutes of compressor off, during Soft Dry “OFF” (within 6 minutes Soft Dry restart control), the indoor unit will
start to operate at normal Cooling mode if the intake temperature is higher than Cooling “ON” point.
12.3.1.
Soft Dry Operation Time Diagram
34
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 start to operate at determined operation mode, until it is switched off using remote control, with the setting
temperature as shown in below table.
• 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.
• 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”.
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.
Automatic Set Temperature
Refer as below.
35
• 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.
• The operation mode judging temperature and standard setting temperature can be increased by 2
°C permanently, by open the
circuit of JX03 at indoor electronic controller.
12.5. Indoor Fan Speed Control
• Indoor Fan Speed can be set using remote control.
12.5.1.
Fan Speed Rotation Chart
Fan Speed (rpm)
CS-A7HKD
CS-A9HKD
CS-A12HKD
S Hi
1200
1310
1320
Hi
1030
1210
1300
Me
920
1000
1120
H Lo
840
890
860
C Lo
780
830
800
Lo-
750
780
750
S Lo
700
750
700
SS Lo
300
300
300
Q S Hi
1100
1210
1220
Q Hi
930
1110
1200
Q Me
820
900
1020
Q H Lo
770
790
810
Q Lo
680
730
700
36
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.
- Fan speed rotates in the range of Hi, Me and Lo-.
- Deodorizing Control will be activated.
• 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 start operation, indoor fan will increase fan speed gradually for deodorizing purpose.
3. For the first time the compressor operate, 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.
4. During compressor stop, indoor fan will operate at Lo- for the beginning 3 minutes to prevent higher volume of refrigerant
in liquid form returning to the compressor.
5. 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 restart of compressor.
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