Table of Contents
Advertisement
(16) Outline of dehumidifying (DRY) operation
(d) Countermeasure for excessive temperature rise
If it feels excessive temperature rise in heating operation, setting temperature can be lower.
(a) Purpose of DRY mode
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.
(17) Outline of cooling operation
(b) Outline of control
(a) Operation of major functional components in cooling mode
(i) Indoor unit fan speed and compressor are controlled by the area which is selected by the temperature difference.
Compressor
Indoor fan motor
Outdoor fan motor
Indoor unit
fan speed
4-way valve
(b) Detail of control in each mode (Pattern)
(i)
Fuzzy operation
Compressor
speed
Fan speed
(ii) The indoor unit check the current area by every 5 minutes, and operate by the next checking.
Auto
HI
(c) Other
MED
When the outdoor air temperature and room temperature is low in cooling operation, indoor unit can not operate in cooling,
LO
and dehumidify. In this case, the units operate in heating to rise the indoor air temperature and after that start DRY operation.
ULO
(17) Outline of automatic operation
(a) Determination of operation mode
(a) Determination of operation mode
Operation mode is determined by indoor air temperature and outdoor air temperature as following.
Indoor air
temperature (˚C)
Indoor air temperature (˚C)
(b) Operation mode is changes when keep cooling and heating thermostat off 20 minutes and be satisfied following conditions.
If the setting temperature is changed with the remote control, the operation mode is judged immediately.
(b)
(i)
※It can not be changed to heating mode if outdoor air temperature is 28℃ or higher.
(ii)
When both the indoor and the outdoor air temperatures are in the range "A", cooling or heating is switched depending on
(c) When the unit is started again within one hour after the stop of automatic operation or when the automatic operation is
the difference between the setting temperature and the indoor air temperature.
selected during heating, cooling or dehumidifying operation, the unit is operated in the previous operation mode.
(iii)
When the operation mode has been judged following the change of setting temperature with the remote control, the hourly j-
(d) Setting temperature can be adjusted within the following range. There is the relationship as shown below between the signals
udgment of operation mode is cancelled.
of the wireless remote control and the setting temperature.
(c)
Cooling
(d)
Setting
temperature
Heating
(e) When the unit is operated automatically with the wired remote control, the cooling operation is controlled according to the
display temperatures while the setting temperature is compensated by
Setting
temperature
Thermostat ON
Indoor unit fan speed
ON
D
C
ON
ON
ULo(Lo) speed
OFF
Stop
Minimum
Stop
Difference between set temperature and indoor air temperature.
Model
SRK20ZS-S
20-66rps
20-66rps
20-44rps
20-38rps
20-30rps
SP
Heating
27.5
25.5
Outdoor air temperature (˚C)
18.0
Keep operation
mode
Heating
SP － 1
Indoor air temperature－Setting temperature (˚C)
18
19
20
18
19
20
20
21
22
–6
–5
Cooling
Dehumidifying
Heating
Cooling
Thermostat OFF
OFF
Area
B
A
ON
Me speed
OFF
(few minutes ON)
OFF
Limited （Lower than
normal cooling operation）
Limited
（Lower than the speed in"Area A"）
Setting temperature
SRK25ZS-S
SRK35ZS-S
20-74rps
20-98rps
20-74rps
20-98rps
20-55rps
20-80rps
20-48rps
20-76rps
20-38rps
20-38rps
Cooling
SP: Setting temperature
28
A
Dehumidifying
Heating
Cooling
18
Outdoor air temperature (˚C)
SP: Setting temperature
SP ＋ 1
Signals of wireless remote control (Display)
21
22
23
24
24
21
22
23
26
23
24
25
Signals of wireless remote control (Display)
＋
2℃ during heating.
–4
–3
–2
–1
155
-
-
'17 • SCM-T-225
'09•SRK-DB-087D
Failure
OFF
OFF
OFF
(few minutes ON)
OFF
SRK50ZS-S
23-96rps
23-96rps
23-62rps
23-46rps
23-37rps
Cooling
30
25
26
27
28
25
26
27
28
27
28
29
30
±0
+1
+2
+3
Unit : ℃
29
30
29
30
31
32
+4
+5
+6
Hide quick links:
Advertisement
Table of Contents
