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Indoor Unit (RA Models)
SiEN18-622
122
Function
7.4
Automatic Operation
Automatic Cooling / Heating Function (Heat Pump Only)
When the AUTO mode is selected with the remote control, the microcomputer automatically
determines the operation mode from cooling and heating according to the room temperature
and setting temperature at the time of the operation startup, and automatically operates in that
mode.
The unit automatically switches the operation mode to cooling or heating to maintain the room
temperature at the main unit setting temperature.
Detailed
Explanation of
the Function
1. Remote control setting temperature is set as automatic cooling / heating setting temperature
(18 to 30°C).
2. Main unit setting temperature equals remote control setting temperature plus correction
value (correction value / cooling: 0 deg, heating: 0 deg.).
3. Operation ON / OFF point and mode switching point are as follows.
1
Heating
→
Cooling switching point:
Room temperature
≥
Main unit setting tempe2.5 deg.
2
Cooling
→
Heating switching point:
Room temperature < Main unit setting temperature –2.5 deg.
3
Thermostat ON / OFF point is the same as the ON / OFF point of cooling or heating
operation.
4. During initial operation
Room temperature
≥
Remote control setting temperature: Cooling operation
Room temperature < Remote control setting temperature: Heating operation
(R1
3
60)
He
a
ting /
cooling
s
witching point
(He
a
ting thermo
s
t
a
t
OFF point)
M
a
in
u
nit
s
etting
temper
a
t
u
re
(Cooling thermo
s
t
a
t
OFF point)
Cooling /
he
a
ting
s
witching point
With compre
ss
or c
a
p
a
city
su
pplied
With no compre
ss
or c
a
p
a
city
su
pplied
2.5 deg.
or higher
2.5 deg.
or higher
(1.5 deg.)
or higher
Le
ss
th
a
n
(1.5 deg.)
Cooling
oper
a
tion
Cooling
oper
a
tion
He
a
ting
oper
a
tion
Summary of Contents for FTKS50BVMB
Page 1: ...SiEN18 622 E Series Service Manual Applied Models zSuper Multi Plus Cooling Only Heat Pump ...
Page 105: ...Refrigerant Flow for Each Operation Mode SiEN18 622 92 Refrigerant Circuit ...
Page 157: ...Indoor Unit SkyAir Models SiEN18 622 144 Function ...
Page 312: ...SiEN18 622 Ceiling Mounted Cassette Type System Configuration 300 ...
Page 424: ...Method of Replacing The Inverter s Power Transistors Modules SiEN18 622 412 Troubleshooting ...
Page 446: ...Wiring Diagrams SiEN18 622 434 Appendix ...
Page 452: ...SiEN18 622 vi Index ...