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(10) Outline of cooling operation
(a) Operation of major functional components in Cooling mode
Compressor
Indoor fan motor
Outdoor fan motor
4-way valve
(b) Detail of control in each mode (Pattern)
(i)
Fuzzy operation
During the fuzzy operation, the air flow and the compressor command 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
(11) Outline of automatic operation
(a) Determination of operation mode
The unit checks the indoor air temperature and the outdoor air temperature, determines the operation mode, and then begins in
the automatic operation.
Indoor air temperature (˚C)
(b)
The unit checks the temperature every hour after the start of operation and, if the result of check is not same as the previous op-
eration mode, changes the operation mode.
(i) If the setting temperature is changed with the remote control, the operation mode is judged immediately.
(ii) When both the indoor and the outdoor air temperatures are in the range "A", cooling or heating is switched depending on
the difference between the setting temperature and the indoor air temperature.
(iii) When the operation mode has been judged following the change of setting temperature with the remote control, the hourly
judgment of operation mode is cancelled.
(c)
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.
(d)
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
(e)
When the unit is operated automatically with the wired remote control connected, the cooling operation is controlled according
to the display temperatures while the setting temperature is compensated by ＋ 1˚C during dehumidifying or by ＋ 2˚C during
heating.
Thermostat ON
ON
ON
ON
OFF
Model
SRK25ZMP-S
20~74rps
20~74rps
20~52rps
20~38rps
27.5
25.5
18.0
–6
–5
–4
18
19
20
19
20
21
20
21
22
Cooling
Thermostat OFF
OFF
ON
OFF
(few minutes ON)
(few minutes ON)
OFF
SRK35ZMP-S
SRK45ZMP-S
20~98rps
12~96rps
20~98rps
12~96rps
20~74rps
12~62rps
20~46rps
12~38rps
A
Dehumidifying
Heating
18
Outdoor air temperature (˚C)
Signals of wireless remote control (Display)
±0
–3
–2
–1
21
22
23
24
22
23
24
25
23
24
25
26
32
-
-
'13 • SRK-T-140
Failure
OFF
ON
OFF
OFF
Cooling
30
+1
+2
+3
+4
25
26
27
28
26
27
28
29
27
28
29
30
+5
+6
29
30
30
31
31
32
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Troubleshooting
