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37
13.2.5 Automatic
operation
• This mode can be set using remote control and the operation is decided by remote control setting temperature,
remote control operation mode, indoor intake temperature and outdoor air temperature.
• During operation mode judgment, indoor fan motor (with speed of Lo-) and outdoor fan motor are running for 30
seconds to detect the indoor intake and outdoor air temperature. The operation mode is decided based on below
chart.
chart.
Indoor intake air
Temperature (°C)
Heating
mode
36
Soft
dry
mode
Cooling
mode
T1
T2
Remote control
setting temperature
T3
16
13 19 21 23 25
Outdoor air
temperature (°C)
Values of T1, T2, and T3 depend on remote control setting temperature, as shown in below table. After the
adjustment of T1, T2 and T3 values, the operation mode for that particular environment and remote control setting is
judged and performed, based on the above operation mode chart, every 30 minutes.
Remote control setting temperature (°C)
T1
T2
T3
16 ~ 18
+10
-2
-5
19 ~ 22
+8
-3
-7
23 ~ 26
+7
-3
-7
27 ~ 30
+6
-3
-8
There is a temperature shifting on T1, T2 and T3 if the operation mode judged is changed from cooling/ soft dry to
heating or vice versa.
Operation mode change from
Temperature shifts (°C)
Cooling/ Soft dry → Heating
-2
Heating → Cooling/ Soft dry
+2
Example of operation mode chart adjustment:
From the above table, if remote control setting temperature = 25,
T1 = 25 + 7 = 32; T2 = 25 – 3 = 22; T3 = 25 -7 =18
The operation mode chart for this example is shown in below figure and the operation mode to be performed will
depend on indoor intake air temperature and outdoor air temperature at the time when the judgment is made.
Indoor intake air
Temperature (°C)
Heating
mode
36
Soft
dry
mode
32
Cooling
mode
+7
25
-3
-7
Remote control setting
temperature
22
18
16
13
19
21
23
25
Outdoor air
temperature (°C)
38
55°C
50°C
45°C
30°C
35°C
40°C
45°C
50°C
40°C
30°C
35°C
25°C
Me+
Me-
Me-
Lo
Lo
Lo
Lo-
Indoor Pipe Temp.
13.2.6 Indoor fan motor operation
• Basic Rotation speed (rpm)
o
Manual
fan
speed
[Cooling, Dry]
Fan motor’s number of rotation is determined according to remote control setting.
Remote control
O
O
O
O
O
Tab (rpm)
SHi
Me+
Me
Me-
Lo
[Heating]
Fan motor’s number of rotation is determined according to remote control setting.
Remote control
O
O
O
O
O
Tab
(rpm) Hi
Me+ Me Me- Lo
o
Auto fan speed
[Cooling, Dry]
According to room temperature and setting temperature, indoor fan speed is determined automatically.
The indoor fan will operate according to pattern below.
[1
pattern:10s]
Fan
Speed
a b c d e f g h a b
Higher
Medium
Lower
[Heating]
According to indoor pipe temperature, automatic heating fan speed is determined as follows.
• Feedback
control
o
Immediately after the fan motor started, feedback control is performed once every second.
o
During fan motor is stop and then restart. If the fan motor counter becomes 7 times, then H19 – fan motor
error is detected. Operation stops and cannot on back.
39
1
3
4
5
2
0°
145°
Close position
Side view
Figure 2
50°C
30°C
16°C
58°C
37°C
36°C
36°C
A
B
D
C
Indoor heat
exchanger temperature
exchanger temperature
Figure 1
13.2.7 Airflow direction
• There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by
vertical vanes).
• Control of airflow direction can be automatic (angles off direction is determined by operation mode, heat
exchanger temperature and intake air temperature) and manual (angles of direction can be adjusted using
remote control).
remote control).
13.2.7.1 Vertical
airflow
Vane Angle (°)
Operation
mode
Airflow direction
1 2
3
4 5
CU-E7,9,12,15GK
0
A Upward
fix
CU-E18GK 16
CU-E7,9,12,15GK
45
B Downward
fix
CU-E18GK 50
CU-E7,9,12,15GK
0
C Upward
fix
CU-E18GK 8
CU-E7,9,12,15GK
0
Auto with heat
exchanger
temperature
D Downward
fix
CU-E18GK 8
CU-E7,9,12,15GK
12 25 37 49 60
Heating
Manual
CU-E18GK 8 17 33 49 60
CU-E7,9,12,15GK
10 ~ 32 (22 ~ 30)
Auto (Anti-Dew Control)
CU-E18GK
8 ~ 38
CU-E7,9,12,15GK 12 (22)
18
25
31
37 (30)
Cooling and
ion
Manual (Anti-Dew Control)
CU-E18GK 8 17 33 49 60
CU-E7,9,12,15GK
10 ~ 32 (22 ~ 30)
Auto (Anti-Dew Control)
CU-E18GK 8
CU-E7,9,12,15GK 12 (22)
18
25
31
37 (30)
Soft Dry
Manual (Anti-Dew Control)
CU-E18GK 8 17 25 33 38
• 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.
exchanger temperature as figure 1 below. When the air conditioner is stopped using remote control, the vane
will shift to close position.
• 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 position.
vane will shift to close position.
40
40°C
43°C
A: Swing
B: fix front
Indoor heat
exchanger temperature
exchanger temperature
Figure 1
1
3 4
5
2
0°
Top view
Figure 2
13.2.7.2 Horizontal
airflow
• For CS-E7, 9, 12, 15GKD/GKE, the horizontal airflow direction louvers can be adjusted manually by hand.
• For CS-E18GKD/GKE, automatic 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 Figure 1 below.
heat exchanger temperature as Figure 1 below.
Operation Mode
Vane angle (°)
A
68 ~ 112
Heating, with heat exchanger temperature
B 90
Cooling and soft dry
68 ~ 112
• For CS-E18GKD/GKE, manual vertical airflow direction can be set using remote control; the angles of the vane
are as stated below and the positions of the vane are as Figure 2 above.
Pattern
1 2 3 4 5
Airflow direction
patterns at remote
control
Vane angle (°)
90
68
79
101
112
13.2.8 Quiet operation (Cooling mode/Cooling area of Dry mode)
Purpose
• To provide quiet cooling operation compare to normal operation.
Control condition
Control condition
• Quiet operation start condition
1. When “quiet” button at remote control is pressed. Quiet LED illuminates.
• Quiet operation stop condition
1. When one of the following conditions is satisfied, quiet operation stops:
o
Powerful button is pressed.
o
Stop by OFF/ON switch.
o
Timer “off” activates.
o
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.
5. During quiet operation, if timer “on” activates, quiet operation maintains.
6. After off, when on back, quiet operation is not memorized.
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 memorized.
Control content
• 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.
• Fan speed for quiet operation is -1 step from setting fan speed.
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