Panasonic CS-XE9EKE / CU-XE9EKE / CS-XE12EKE / CU-XE12EKE Service Manual ▷ View online
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11 Operation and Function
11.1. Basic Function
Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, auto-
matically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcom-
puter maintains the set temperature by measuring the temperature of the environment and performing temperature shifting. The
compressor at outdoor unit is operating following the frequency instructed by the microcomputer at indoor unit that judging the
condition according to internal setting temperature and intake air temperature.
matically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcom-
puter maintains the set temperature by measuring the temperature of the environment and performing temperature shifting. The
compressor at outdoor unit is operating following the frequency instructed by the microcomputer at indoor unit that judging the
condition according to internal setting temperature and intake air temperature.
11.1.1.
Internal Setting Temperature
Once the operation starts, remote control setting temperature will be taken as base value for temperature shifting processes.
These shifting processes are depending on the air conditioner settings and the operation environment. The final shifted value
will be used as internal setting temperature and it is updated continuously whenever the electrical power is supplied to the unit.
These shifting processes are depending on the air conditioner settings and the operation environment. The final shifted value
will be used as internal setting temperature and it is updated continuously whenever the electrical power is supplied to the unit.
11.2. Airflow Direction
1. There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes).
2. Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger tempera-
2. Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger tempera-
ture and intake air temperature) and manual (angles of direction can be adjusted using remote control).
11.2.1.
Vertical Airflow
1. Automatic vertical airflow direction can be set using remote control; the vane swings up and down within the angles as stated
above. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Figure 1
below. When the air conditioner is stopped using remote control, the vane will shift to close position.
below. When the air conditioner is stopped using remote control, the vane will shift to close position.
2. Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated above and the positions
of the vane are as Figure 2 below. When the air conditioner is stopped using remote control, the vane will shift to close posi-
tion.
tion.
Operation Mode
Airflow Direction
Vane Angle (
q)
1
2
3
4
5
Heating
Auto with Heat Exchanger
A
Upward fix
3
Temperature
B
Downward fix
64
C
Upward fix
3
D
Downward fix
3
Manual
3
17
33
49
63
Cooling, Soft Dry
Auto
8 ~ 36
Manual
8
15
22
30
36
Mode Judgement in Auto
Auto
8
Manual
8
15
22
30
36
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11.2.2.
Horizontal Airflow
1. Automatic horizontal airflow direction can be set using remote control; the vane swings left and right within the angles as
stated below. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Fig-
ure 1 below.
ure 1 below.
2. Manual horizontal airflow direction can be set using remote control; the angles of the vane are as stated below and the posi-
tions of the vane are as Figure 2 above.
11.3.
Quiet operation (Cooling Mode/Cooling area of Dry Mode)
A. Purpose
To provide quiet cooling operation compare to normal operation.
B. Control condition
a. Quiet operation start condition
• When “quiet” button at remote control is pressed.
Quiet LED illuminates.
b. Quiet operation stop condition
1. When one of the following conditions is satisfied, quiet operation stops:
a. Powerful button is pressed.
b. Stop by OFF/ON switch.
b. Stop by OFF/ON switch.
c. Timer “off” activates.
d. Quiet button is pressed again.
Operation Mode
Vane Angle (
q)
Heating, with heat exchanger temperature
A
65 ~ 115
B
90
Cooling, Soft Dry and Ion
65 ~ 115
Pattern
1
2
3
4
5
Airflow Direction
Pattern at Remote
Control
Pattern at Remote
Control
Vane Angle (
q)
90
65
78
102
115
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2. When quiet operation is stopped, operation is shifted to normal operation with previous setting.
3. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.
4. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode.
5. During quiet operation, if timer “on” activates, quiet operation maintains.
6. After off, when on back, quiet operation is not memorised.
3. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.
4. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode.
5. During quiet operation, if timer “on” activates, quiet operation maintains.
6. After off, when on back, quiet operation is not memorised.
C. Control contents
1. Fan speed is changed from normal setting to quiet setting of respective fan speed.
This is to reduce sound of Hi, Me, Lo for 3dB.
2. Fan speed for quiet operation is -1 step from setting fan speed.
11.3.1.
Quiet operation (Heating)
A. Purpose
To provide quiet heating operation compare to normal operation.
B. Control condition
a. Quiet operation start condition
• When “quiet” button at remote control is pressed.
Quiet LED illuminates.
b. Quiet operation stop condition
1. When one of the following conditions is satisfied, quiet operation stops:
a. Powerful button is pressed.
b. Stop by OFF/ON switch.
b. Stop by OFF/ON switch.
c. Timer “off” activates.
d. Quiet button is pressed again.
2. When quiet operation is stopped, operation is shifted to normal operation with previous setting.
3. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.
4. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode, except fan only mode.
5. During quiet operation, if timer “on” activates, quiet operation maintains.
6. After off, when on back, quiet operation is not memorised.
3. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.
4. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode, except fan only mode.
5. During quiet operation, if timer “on” activates, quiet operation maintains.
6. After off, when on back, quiet operation is not memorised.
C. Control contents
a. Fan Speed manual
1. Fan speed is changed from normal setting to quiet setting of respective fan speed.
This is to reduce sound of Hi, Me, Lo for 3dB.
2. Fan speed for quiet operation is -1 step from setting fan speed.
3. Fan Speed Auto
3. Fan Speed Auto
Indoor FM RPM depends on pipe temp sensor of indoor heat exchanger.
11.4.
Powerful Mode Operation
When the powerful mode is selected, the internal setting temperature will shift to achieve the setting temperature quickly.
(a) Cooling Operation
34
(b) Soft Dry Operation
(c) Heating Operation
11.5.
ON Timer Control
ON timer can be set using remote control, the unit with timer set will start operate earlier than the setting time. This is to provide a
comfortable environment when reaching the set ON time.
comfortable environment when reaching the set ON time.
60 minutes before the set time, indoor (at fan speed of Lo-) and outdoor fan motor start operate for 30 seconds to determine the
indoor intake air temperature and outdoor air temperature in order to judge the operation starting time.
indoor intake air temperature and outdoor air temperature in order to judge the operation starting time.
From the above judgment, the decided operation will start operate earlier than the set time as shown below.
11.6.
OFF Timer Control
OFF timer can be set using remote control, the unit with timer set will stop operate at set time.
11.7.
Auto Restart Control
1. When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within three to four
minutes (there are 60 patterns of compressor restart waiting time between 2 minutes 58 seconds and 3 minutes 52 seconds
to be selected randomly) after power supply resumes.
to be selected randomly) after power supply resumes.
2. This type of control is not applicable during ON/OFF Timer setting.
11.8.
Remote Control Signal Receiving Sound
• Long beep sound will be heard when:-
- Stopping the air conditioner using ON/OFF switch.
• Short beep sound will be heard for others setting.
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