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No.
5
Item
Automatic cooling/
heating control
Outline of specifications
1) The judgment of selecting COOL/HEAT is carried out
as shown below. When exceeding +1.5 against Tsh
10 minutes and after thermo.-OFF, heating operation
(Thermo. OFF) exchanges to cooling operation.
Description in the parentheses shows an example of
cooling ON/OFF.
Remarks
Tsc: Setup temp. in
cooling operation
Tsh: Setup temp. in
heating operation
+ temp. correction of
room temp. control
6
(˚C)
26
16
HH
OFF
Tc
Tcj
B zone
A zone
WWhen –1.5 or more lowers against Tsc 10 minutes
and after thermo. OFF, cooling operation
(Thermo. OFF) exchanges to heating operation.
2) For the automatic capacity control after judgment of
cooling/heating, see Item 4.
3) For temperature correction of room temp. control in
automatic heating, see Item 3.
Ta (˚C)
-1.5
Tsc
Tsh
+1.5
Heating
(Cooling OFF)
(Cooling ON)
or
Cooling
1) In heating operation, the indoor fan is controlled
based on the detected temperature of Tc sensor or Tcj
sensor. As shown below, the upper limit of the
revolution frequency is restricted.
However B zone is assumed as C zone for 6 minutes
and after when the compressor activated.
In defrost operation, the control value of Tc or Tcj are
shifted by 6°C.
In A zone, [PRE-HEAT
(Heating ready)] is
displayed.
Cool air discharge
preventive control