-
71
-
'09•SRK-DB-087D
(17)ࠉOutline of heating operation
(a) Operation of major functional components in heating mode
(b) Details of control at each operation mode (pattern)
(i) Fuzzy operation
ON OFF
ON ON
ON
OFF
(few minutes ON)
ON ON(HOT KEEP)*
OFF
OFF
(3 minutes ON)
OFF
OFF
Thermostat ON Thermostat OFF Failure
Heating
Compressor
Indoor fan
Outdoor fan
4-way valve
Model
Fan speed
Auto
MED
HI
LO
*It can be set the indoor fan motor off or the heating thermostat OFF with connecting a wired remote control.
In the case, indoor air temperature is detected by sensor on the wired remote control.
12-78rps
12-78rps
12-78rps
12-42rps
SRK20
12-86rps
12-86rps
12-86rps
12-50rps
SRK25
12
-
98rps
12
-
98rps
12
-
98rps
12
-
66rps
SRK35
ULO
12-30rps
12-30rps
12
-
30rps
12
-
106rps
12
-
106rps
12
-
106rps
12
-
78rps
SRK50
12
-
38rps
12
-
120rps
12
-
120rps
12
-
120rps
12
-
90rps
SRK60
12
-
38rps
(ii) Hot keep operation
(c) Defrost operation
(i)
1)
2)
3)
4)
5)
1)
2)
(ii)
During the heating operation, the indoor fan speed can be controlled based on the temperature of the indoor heat
exchanger (Th2) to prevent blowing out of cold air.
are satisfied.)
is satisfied.)
(Total compressor operation time)
After finish of defrost operation
C or less for 3 minutes continuously.
(Total compressor operation time)
Continued operation time of defrost operation → For more than 18 minutes.
In case satisfied all of following conditions.
• Connect compressor speed 0 rps 10 times or more.
• Satisfy 1), 2) and 3) conditions above.
• Outdoor air temperature is 3°C or less.
is as following.
35
35
(models SRK20, 25, 35 : TH2 ; models SRK50, 60 : TH1)
(models SRK20, 25, 35 : TH2 ; models SRK50, 60 : TH1)
(models SRK50, 60 : 10ºC)
Max. 18 minutes.
Heating operation
¡Defrost operation
Depends on an operation condition, the time can be longer than 7 minutes.
2~7 minutes
Hot keep operation
'09•SRK-DB-087D
(17)ࠉOutline of heating operation
(a) Operation of major functional components in heating mode
(b) Details of control at each operation mode (pattern)
(i) Fuzzy operation
ON OFF
ON ON
ON
OFF
(few minutes ON)
ON ON(HOT KEEP)*
OFF
OFF
(3 minutes ON)
OFF
OFF
Thermostat ON Thermostat OFF Failure
Heating
Compressor
Indoor fan
Outdoor fan
4-way valve
Model
Fan speed
Auto
MED
HI
LO
*It can be set the indoor fan motor off or the heating thermostat OFF with connecting a wired remote control.
In the case, indoor air temperature is detected by sensor on the wired remote control.
12-78rps
12-78rps
12-78rps
12-42rps
SRK20
12-86rps
12-86rps
12-86rps
12-50rps
SRK25
12
-
98rps
12
-
98rps
12
-
98rps
12
-
66rps
SRK35
ULO
12-30rps
12-30rps
12
-
30rps
12
-
106rps
12
-
106rps
12
-
106rps
12
-
78rps
SRK50
12
-
38rps
12
-
120rps
12
-
120rps
12
-
120rps
12
-
90rps
SRK60
12
-
38rps
(ii) Hot keep operation
(c) Defrost operation
(i)
1)
2)
3)
4)
−
(ii)
During the heating operation, the indoor fan speed can be controlled based on the temperature of the indoor heat
exchanger (Th2) to prevent blowing out of cold air.
are satisfied.)
(Total compressor operation time)
After finish of defrost operation
C or less for 3 minutes continuously.
(Total compressor operation time)
Continued operation time of defrost operation → For more than 18 minutes.
In case satisfied all of following conditions.
• Connect compressor speed 0 rps 10 times or more.
• Satisfy 1), 2) and 3) conditions above.
• Outdoor air temperature is 3°C or less.
is as following.
35
35
(models SRK20, 25, 35 : TH2 ; models SRK50, 60 : TH1)
(models SRK20, 25, 35 : TH2 ; models SRK50, 60 : TH1)
(models SRK50, 60 : 10ºC)
-20
-20 -15 -10 -5 0 5 10
-15
-10
-5
0
Outdoor air temperature (℃)
Outdoor heat exchanger temperature (
℃)
Defrost operation
start
Defrost operation start temperature
Models SRK20, 25, 35
-20
-20 -15 -10 -5 0 5 10
-15
-10
-5
0
Outdoor air temperature (℃)
Outdoor heat exchanger temperature (
℃)
Defrost operation
start
Defrost operation start temperature
Models SRK50, 60
'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.
(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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