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4.10 Outline of cooling operation
(1) Operation of major functional components in Cooling mode
Compressor
Indoor fan motor
Outdoor fan motor
4-way valve
(2) Detail of control in each mode (Pattern)
(a) Fuzzy operation
During the fuzzy operation, the air flow and the inverter speed are controlled by calculating the difference between the room
temperature setting correction temperature and the suction air temperature.
Fan speed
Auto
HI
MED
LO
4.11 Outline of automatic operation
(1) Determination of operation mode
The unit checks the room temperature and the outdoor air temperature, determines the operation mode, and then begins in the
automatic operation.
Room temperature (˚C)
(2) The unit checks the temperature every hour after the start of operation and, if the result of check is not same as the previous
operation mode, changes the operation mode.
(3) When the unit is started again within one hour after the stop of automatic operation or when the automatic operation is selected
during heating, cooling or dehumidifying operation, the unit is operated in the previous operation mode.
(4) Setting temperature can be adjusted within the following range. There is the relationship as shown below between the signals of the
wireless remote control and the setting temperature.
Cooling
Setting
Dehumidifying
temperature
Heating
Thermostat ON
ON
ON
ON
OFF
Model
SRK20ZG-S
20~64rps
20~64rps
20~48rps
20~32rps
27.5
25.5
19.5
–6
–5
18
19
18
19
20
21
Cooling
Thermostat OFF
OFF
ON
OFF
(few minutes ON)
OFF
SRK25ZG-S
SRK35ZG-S
20~68rps
20~68rps
20~52rps
20~38rps
Dehumidifying
Heating
18
Outdoor temperature (˚C)
Signals of wireless remote control (Display)
–4
–3
–2
–1
20
21
22
23
20
21
22
23
22
23
24
25
18
-
-
Failure
OFF
ON
OFF
(few minutes ON)
OFF
SRK50ZG-S
20~98rps
15~100rps
20~98rps
15~100rps
20~74rps
15~62rps
20~46rps
15~30rps
Cooling
30
±0
+1
+2
+3
24
25
26
27
24
25
26
27
26
27
28
29
+4
+5
+6
28
29
30
28
29
30
30
31
32
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