DOWNLOAD Panasonic CS-A28JKD / CU-A28JKD Service Manual ↓ Size: 5.64 MB | Pages: 64 in PDF or view online for FREE

Model
CS-A28JKD CU-A28JKD
Pages
64
Size
5.64 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner / AIR CONDITIONER
File
cs-a28jkd-cu-a28jkd.pdf
Date

Panasonic CS-A28JKD / CU-A28JKD Service Manual ▷ View online

29
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.
*
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
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.
• The operation mode judging temperature and standard setting temperature can be increased by 2°C permanently, by open the
circuit of JX03 at printed circuit board indoor unit.
Standard for Determining Operation Mode
2nd Judgement onwards
Present
Mode
Judgement
Next Mode
Cooling
Soft Dry
Heating
Cooling
O
(Judgement:
23
qC & Above)
Not Applicable
O
(Judgement:
Below 23
qC)
23
qC
Cooling
Heating
Soft Dry
Not Applicable
O
(Judgement:
20
qC & Above)
O
(Judgement:
Below 20
qC)
20
qC
Soft Dry
Heating
Heating
O
(Judgement:
25
qC & Above)
Not Applicable
O
(Judgement:
Below 25
qC)
25
qC
Cooling
Heating
Operation
Hi
(Standard)
Lo
(+2
qC)
(±0
qC)
(-2
qC)
Cooling
27
qC
25
qC
23
qC
Soft Dry
24
qC
22
qC
20
qC
Heating
23
qC
21
qC
19
qC
30
12.5. Indoor Fan Speed Control
• Indoor Fan Speed can be set using remote control.
12.5.1.
Fan Speed Rotation Chart
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.
Speed
CS-A28HKD
Cool, Dry
Heat
S Hi
Hi
1540
Hi
1500
Me
Me
1380
Lo+
Lo
1250
Lo
1030
Lo-
Lo-
810
S Lo
S Lo
300
SS Lo
300
Q SHi
Q Hi
1450
Q Hi
1410
Q Me
Q Me
1290
Q Lo
1160
Q Lo
1160
31
• 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 20 seconds to prevent higher volume of refrigerant
in liquid form returning to the compressor.
5. After the compressor at turn off condition 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 restart of compressor.
• Auto Fan Speed during Soft Dry operation:
1. Indoor fan will rotate alternately between off and Lo-.
2. At the beginning of each compressor start operation, indoor fan will increase fan speed gradually for deodorizing purpose.
3. When compressor at turn off condition for 6 minutes, indoor fan will start fan speed at Lo- to circulate the air in the room.
This is to obtain the actual reading of intake air temperature.
• Auto Fan Speed during Heating operation.
1. Indoor fan will rotate in the range of SLo 
o Me according to the heat exchanger temperature.
32
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 2 speed for outdoor fan motor. Outdoor fan speed can be changed to Hi or Lo according to outdoor temperature.
• For Cooling or Soft Dry operation when outdoor temperature reaches to 31
qC (Hi-speed), 29qC (Lo-speed).
• For Heating operation when outdoor temperature reaches to 13.5
qC (Hi-speed), 15.5qC (Lo-speed)
• When the 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
(e-ion, 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 stopped with remote control, the discharge vent is
reset, and stop 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 and rest at the upper limit.
Cooling and Soft Dry Operation
(Heating Operation condition)
• When the piping air temperature reaches 38°C, the
• louver is changed from upper to lower limit. When the
• piping air temperature falls to 35°C, the louver is changed
from lower to upper limit.
Heating Operation
12.7.2.
Manual Control
• When the vertical airflow direction is set to Manual using the remote control, the automatic airflow is released and the airflow
direction louver move up and down in the range shown in the diagram.
• The louver can be adjusted by pressing the button to the desired louver position.
• When stopped with remote control, the discharge vent is reset, and stop at the closing position.
Cooling and Soft Dry Operation
Heating Operation
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