-
72
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Outline of dehumidifying (DRY) operation
The purpose is "Dehumidification", and not to control the humidity to the target condition.
Indoor/outdoor unit control the operation condition to reduce the humidity, and also prevent over cooling.
(i) Indoor unit fan speed and compressor are controlled by the area which is selected by the temperature difference.
Indoor unit fan speed
Area
D C B A
Lo speed
Indoor
fan speed ULo speed
Stop
Limited（Lower than
normal cooling operation）
Compressor Limited
speed Minimum
（Lower than the speed in”Area A”）
Stop
Setting temperature
Difference between set temperature and indoor air temperature.
When the outdoor air temperature and room temperature is low in cooling operation, indoor unit can not operate in cooling,
and dehumidify. In this case, the units operate in heating to rise the indoor air temperature and after that start DRY operation.
(a) Purpose of DRY mode
(b) Outline of control
(ii) The indoor unit check the current area by every 5 minutes, and operate by the next checking.
(c) Other
'09•SRK-DB-087D
(18)Outline of cooling operation
(a)
ࠉOperation of major functional components in cooling mode
(d) Countermeasure for excessive temperature rise
If it feels excessive temperature rise in heating operation, setting temperature can be lower.
ON OFF OFF
OFF OFF OFF
ON
OFF
(few minutes ON)
OFF
(few minutes ON)
ON ON OFF
Thermostat ON Thermostat OFF Failure
Cooling
Compressor
Indoor fan
Outdoor fan
4-way valve
(b) Detail of control in each mode (Pattern)
(i) Fuzzy operation
12-74rps
12-74rps
12-54rps
12-42rps
SRK35
12-58rps
12-58rps
12-38rps
12-34rps
SRK25
12-50rps
12-50rps
12-34rps
12-30rps
SRK20
Model
Fan speed
Auto
MED
HI
LO
12-30rps
12-110rps
12-110rps
12-90rps
12-66rps
SRK60
12-30rps
12-86rps
12-86rps
12-70rps
12-50rps
SRK50
12-30rps12-30rps12-30rps
ULO
(b)
(i)
(ii)
(iii)
(c)
(d)
27.5
25.5
18.0
18
30
(20)ࠉOutline of automatic operation
(a) Determination of operation mode
Heating
Dehumidifying
Cooling
Indoor air temperature (˚C)
Outdoor air temperature (˚C)
Signals of wireless remote control (Display)
–6 –5 –4 –3 –2 –1
±
0+1+2+3+4+5+6
Setting
temperature
Cooling
Dehumidifying
Heating
A
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.
When the operation mode has been judged following the change of setting temperature with the remote control, the hourly j-
udgment of operation mode is cancelled.
(i) Setting
(ii) Contents of control
Signal of wireless remote control (Display)
Unit : °C
18
20
18
19
21
19
20
22
20
21
23
21
22
24
22
23
25
23
24
26
24
25
27
25
26
28
26
27
29
27
28
30
28
29
31
29
30
32
30
Before setting
After setting
Push ON/OFF button 30 seconds or more after turn on the power source and operate the air-conditioner
at least once time, At completion of the setting, the indoor unit emits a buzzer sound “Pip Pip”.
(
iii) Reset condition
Push ON/OFF button 30 seconds or more during setting this mode. At completion of the reset, the indoor
unit emits a buzzer sound “Pip Pip Pip”.
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