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1.6.10 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 compressor speed are controlled by calculating the difference between the
indoor temperature setting correction temperature and the return air temperature.
Fan speed
Auto
HI
MED
LO
1.6.11 Outline of automatic operation
(1) Determination of operation mode
The unit checks the indoor temperature and the outdoor air temperature, determines the operation mode, and then begins in the
automatic operation.
Indoor air 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 controller and the setting temperature.
Cooling
Setting
Dehumidifying
temperature
Heating
Thermostat ON
ON
ON
ON
OFF
Model
SRK20ZIX-S
20~65rps
20~65rps
20~44rps
20~30rps
27.5
25.5
19.5
–6
–5
–4
0
0
0
Cooling
Thermostat OFF
OFF
ON
OFF
(few minutes ON)
(few minutes ON)
OFF
SRK25ZIX-S
SRK35ZIX-S
20~74rps
20~86rps
20~74rps
20~86rps
20~55rps
20~58rps
20~34rps
20~38rps
Dehumidifying
Heating
18
Outdoor air temperature (˚C)
Signals of wireless remote controller (Display)
±0
–3
–2
–1
-
-
Failure
OFF
OFF
OFF
OFF
SRK50ZIX-S
12~86rps
12~86rps
12~62rps
12~34rps
Cooling
30
+1
+2
+3
+4
0
SRK60ZIX-S
12~110rps
12~110rps
12~86rps
12~48rps
Unit : ºC
+5
+6
0
0
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