38
Operation
(Reference)
System Settings
Menu Item
Description
Automatic
Changeover
< Control Implementation Conditions >
The relationship between the main room temperature, the main set temperature,
and the operation mode is described below, with examples.
(Two examples are given, as the operation differs for temperature differences 2
°
C
and below and 3
°
C and above.)
The controls are implemented when the control conditions are satisfied, every 5
minutes from the time the power is turned on.
< Implementation conditions when the temperature difference is 2
°
C or lower.>
(The figure below is for a temperature difference of 1
°
C)
Main heating set temperature
EXAMPLE :
26
°
C
Temperature
Main cooling set temperature
EXAMPLE :
27
°
C
Heating mode
Heating mode
Time
Shift up from heating
to cooling switch set
temperature
Shift down from
cooling to heating
switch set temperature.
Cooling mode
Main room temperature
Main heating set temperature – 1
°
C
Main cooling set tempe 1
°
C
1
2
q
Conditions for switching from heating to cooling :
Main room temperature > main set tempe temperature diff 1
°
C
EXAMPLE :
28.1
°
C > 26
°
C + 1
°
C + 1
°
C
w
Conditions for switching from cooling to heating :
Main room temperature < main set temperature – temperature difference – 1
°
C
EXAMPLE :
24.9
°
C < 27
°
C – 1
°
C – 1
°
C
q
Conditions for switching from heating to cooling :
Main room temperature > main set tempe temperature difference
EXAMPLE :
27.1
°
C > 24
°
C + 3
°
C
w
Conditions for switching from cooling to heating :
Main room temperature < main set temperature - temperature difference
EXAMPLE :
23.9
°
C < 27
°
C – 3
°
C
<Implementation conditions when the temperature difference is 3
°
C or higher.>
(The figure below is for a temperature difference of 3
°
C)
Main heating set temperature
EXAMPLE :
24
°
C
Temperature
Main cooling set temperature
EXAMPLE :
27
°
C
Time
Shift up from heating
to cooling switch set
temperature
Shift down from
cooling to heating
switch set temperature.
Main room temperature
Temperature
difference
1
2
∗
See the next page for a detailed description of the instructions to the air conditioner.
Heating mode
Cooling mode
Heating mode
Temperature difference
81
See page
Oper
ation