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Model
Lower limit speed
2)
When this control has continued for more than 30 minutes continuously,the following wind direction control is performed.
2)
a) When the vertical wind direction is set at other than the vertical swing,the flaps change to the horizontal position.
b) When the horizontal wind direction is set at other than the horizontal swing,the louver changes to the vertical position.
(iii) Reset condition
Humidity is less than 63%.
(j)
Current safe
(i)
Purpose
(b) Frost prevention control
(i)
Operating conditions
(ii)
Detail of operation
1)
2)
(ii) Detail of anti-frost operation
Indoor heat exchanger
Item
(k) Current cut
Lower limit of compressor command speed
(i)
Purpose
Indoor fan
Outdoor fan
(ii)
Detail of operation
4-way valve
(l)
Outdoor unit failure
(iii) Reset conditions
1)
(i)
2)
(ii)
(c) Indoor fan motor protection
(c) Cooling overload protective control
air-conditioner
(i)
Operating conditions
When the outdoor air temperature (TH2) has become continuously for 30 seconds at 38°C or more, or 41°C or more, or
47ºC or more with the compressor running, the lower limit speed of compressor is brought up.
Item
Outdoor air temperature
Lower limit speed
(ii) Detail of operation
1)
The outdoor fan is stepped up by 3 speed step. [Upper limit 8 th speed.]
2)
The lower limit of compressor speed is set to 25 or 30 or 40rps.
However, when the thermo OFF, the speed is reduced to 0 rps.
(iii) Reset conditions
1)
2)
(d)
Cooling high pressure control
(i)
Purpose
Prevents anomalous high pressure operation during cooling.
(ii)
Detector
Outdoor heat exchanger sensor (TH1).
(iii)
Detail of operation
(Example) Compressor speed
P1
Outdoor heat exchanger temperature (°C)
Item
Cooling
SRK20 - 35
20 rps
SRK50
24 rps
temperature
5°C or lower
(models SRK50, 60 : 25 rps)
Depends on compressor speed
item (i), (ii) is satisfied. Once the unit is stopped by this function, it is not
Model
SRK20, 25, 35ZSX-S
38°C or more
25 rps
37°C (models SRK50, 60 : 40°C).
After lapse of 30 sec. or over
(3)
After lapse of 30 sec. or over
(3)
After lapse of 30 sec. or over
(3)
-
Heating
20 rps
24 rps
has elapsed
2.5°C or lower
Keep the fan speed before
frost prevention control
2.5–5
5–8
air-conditioning.
SRK50, 60ZSX-S
41°C or more
30 rps
8rps
(1)
8rps
(1)
lower limit
speed 30rps
0rps
147
-
P2
P3
'17 • SCM-T-225
'09•SRK-DB-087D
compressor
speed
Lower
limit
speed
0 rps
2.5
Indoor heat exchanger
temperature (°C)
.
47°C or more
40 rps
Range B
Range A
31
32
Outdoor air tamperature(
5
8
min
-1
)
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