Panasonic CS-C7JKD / CS-C9JKD / CS-C12JKD / CU-C7JKD / CU-C9JKD / CU-C12JKD Service Manual ▷ View online
29
12.2 Soft Dry Operation
x Soft Dry operation can be set using remote control.
x Soft Dry operation is applied to dehumidify and to perform a gentle cooling to the room.
x This operation starts when the intake air temperature sensor reaches -1.5°C from the setting temperature on the
remote control.
x 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 figure below.
temperature as shown in figure below.
x 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.
12.2.1
Soft Dry Operation Time Diagram
a b c d e f g h i j k l m n o p q r s t u v w x y z
Intake
Air
Temperature
1.5°C
Cooling
ON
Set Temp.
Cooling OFF
1.0°C
Dry OFF, ON
10°C
Indoor Heat
Exchanger
Temperature
2°C
Time Frame
10’ 6’ 1’
6’ 1’
6’ 1’
4’
6’
Compressor
Indoor Fan
Lo- Lo-
*
* Lo-
* * Lo- Lo-
Lo- Lo-
* Lo-
Outdoor Fan
Operation LED
<Description of operation>
Operation
g – h, l – m, o – p
: Minimum 60 seconds forced operation
a – c
: Minimum 3 minutes restart control (Time Delay Safety Control) –
Cooling operation
Cooling operation
Stop
c – e
: 10 minutes dry operation
e – g, i – k, m – o, v – x
: Minimum 6 minutes restart control (Time Delay Safety Control) –
Soft dry operation
Soft dry operation
t – x
: Freeze Prevention Control
*
: Indoor fan OFF for 40” and then rotates at Lo-
Intake air
temperature
Cooling
Dry
Cooling OFF,
Soft Dry ON point
Soft Dry OFF point
Soft Dry OFF
1.5
ƱC
1.0
ƱC
Cooling ON point
Soft Dry ON point
Compressor
ON
Compressor
OFF
30
12.3 Automatic Operation
x Automatic operation can be set using remote control.
x This operation starts to operate with indoor fan at SLo speed for 20 seconds to judge the intake air temperature.
x After judged the temperature, the operation mode is determined by referring to the below standard.
x 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
x The setting temperature for all the operations can be changed one level up or one level down from the standard
temperature as shown in table below by pressing the temperature up or temperature down button at remote
control.
control.
Cooling
Soft
Dry
Higher
Æ +2°C 27°C
24°C
Standard
Æ ±0°C
25°C
22°C
Lower
Æ -2°C
23°C
20°C
x 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.
Setting Temperature (Standard)
Cooling Operation
Cooling Operation
27°C
Intake Air
Temperature
25°C
Soft Dry Operation
Soft Dry Operation
24°C
Cooling Operation
Intake Air
Temperature
23°C
Soft Dry Operation
31
12.4 Indoor Fan Speed Control
x Indoor fan speed can be set using remote control
12.4.1
Fan Speed Rotation Chart
12.4.2
Automatic Fan Speed Control
x When set to Auto Fan Speed, the fan speed is adjusted between maximum and minimum setting as shown in the
table.
o Fan speed rotates in the range of Hi and Me.
o Deodorizing Control will be activated.
SHi
Hi
Me
HLo
CLo
Lo-
SLo
Stop
Hi
Me
Manual
Lo
Normal
Auto
QHi
Hi-70
QMe
Me-70
Manual
QLo
CLo-70
Quiet
Auto
Hi-70
Me-70
Manual
Cooling
Powerful
Auto
Manual
Normal
Auto
Manual
Quiet
Auto
Manual
Soft Dry
Powerful
Auto
Mode
Judgment
x 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
purpose.
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.
seconds from the start of compressor. This cause the room temperature to achieve the setting temperature
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.
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.
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.
lesser noise environment, after 70 seconds from the restarts of compressor.
Fan Speed (rpm)
Speed
CS-C7JKD CS-C9JKD CS-C12JKD
SHi 1050
1170
1150
Hi 960
1150
1080
Me 840
930
940
HLo 820
820
840
CLo 740
740
800
Lo- 700
700
760
SLo 680
680
740
QHi 890
1080
1010
QMe 770
860
870
QLo 690
690
730
32
*1
*2
Lo- Lo- Lo-
Lo-
Variable
RPM
Indoor Fan
Stop
Stop
40” 30”
20” 160”
40” 30”
Compressor
ON OFF
ON
*1
Fan Speed is Hi until the compressor stops (when the room temperature reaches setting
temperature).
temperature).
*2
Fan Speed is Me after the compressor restarts.
x Auto Fan Speed during Soft Dry operation:
1
Indoor fan will rotate alternately between off and Lo-.
2
At the beginning of each compressor starts operation, indoor fan will increase fan speed gradually for
deodorizing purpose.
deodorizing purpose.
3
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.
to obtain the actual reading of intake air temperature.
Lo- Lo-
Lo-
Stop
Stop
Stop
Indoor Fan
40”
6’
40”
Compressor
ON
OFF
ON
12.4.3
Manual Fan Speed Control
x Manual fan speed adjustment can be carried out by using the Fan Speed selection button at the remote control.
x There are 3 types of fan speed settings: Lo, Me, Hi.
12.4.4
Indoor Fan Motor rpm Abnormal Control
x Immediate after the fan motor is started, rpm abnormal control is performed every second.
x During fan motor on, if fan motor feedback 2550 rpm or < 50 rpm continuously for 10 seconds, the fan motor
error counter increased; fan motor is then stopped and restarted. If the fan motor error counter increased to 7,
then air conditioner will stop operation.
then air conditioner will stop operation.
12.5 Outdoor Fan Speed Control
x There is only one speed for outdoor fan motor.
x When the air conditioner is turned on, the compressor and the outdoor fan will operate simultaneously.
x Likewise, both compressor and outdoor fan will stop at the same time if the unit is turned off.
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