Panasonic CS-E7GKEW Service Manual page 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.
Indoor intake air
Temperature (°C)
36
16
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.
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.
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)
36
32
25
22
18
16
13
T1
13 19
Remote control setting temperature (°C)
16 ~ 18
19 ~ 22
23 ~ 26
27 ~ 30
Operation mode change from
Cooling/ Soft dry → Heating
Heating → Cooling/ Soft dry
+7
19
T2
T3
21 23 25 Outdoor air
temperature (°C)
T1
+10
+8
+7
+6
Temperature shifts (°C)
-3
-7
21 23 25 Outdoor air
temperature (°C)
37
Heating mode
Soft dry mode
Cooling mode
Remote control
setting temperature
T2 T3
-2 -5
-3 -7
-3 -7
-3 -8
-2
+2
Heating mode
Soft dry mode
Cooling mode
Remote control setting
temperature