'09•SRK-DB-087D
(b)
(i)
(ii)
(iii)
(c)
(d)
27.5
25.5
18.0
18
30
(15)ޓOutline of cooling operation
(a)
ޓOperation of major functional components in Cooling mode
(b) Detail of control in each mode (Pattern)
1) Fuzzy operation
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 motor
Outdoor fan motor
4-way valve
20~98rps
20~98rps
20~78rps
20~56rps
SRK80ZM-S
20~88rps
20~88rps
20~74rps
20~56rps
SRK71ZM-S
20~78rps
20~78rps
20~61rps
20~50rps
SRK63ZM-S
Model
Fan speed
AUTO
MED
HI
LO
20~36rps20~36rps20~36rps
ULO
(16)ޓOutline 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
judgment of operation mode is cancelled.
(17) Protection control function
(a) Dew prevention control [Cooling]: Prevents dewing on the indoor unit.
(i) Operating conditions:
When the following conditions have been met for more than 30 minutes after starting operation
1) Compressor’s command speed is 28 rps or higher.
2) Detected value of humidity is 68% or higher.
(ii) Contents of operation
1) Air capacity control
Note (1) Ranges A and B are as shown below.
Model
Item
SRK63ZM-S SRK71ZM-S SRK80ZM-S
ULo
Upper limit of compressor’s command speed
(1)
Range A: As per following table, Range B: 40 rps
Indoor fan
4th speed
Hi, Me, Lo
Upper limit of compressor’s command speed
(1)
Range A: As per following table, Range B: 40 rps
Indoor fan
Adaptable to compressor’s command speed (4th speed)
Range A
63 68 78
Range B
Cancel
Humidity(%)
●
Condition for range A
Compressor’s command rps is controlled according to the indoor unit
heat exchanger temperature (Th2) and the indoor unit room temperature
(Th1).
Condition Compressor’s command rps
Th2
≦
Th1
‒
10
・
Decreases the compressor’s target max speed
by 4 rps.
・
If the condition is met still 20 seconds later,
the speed is decreased further by 4 rps. This
process is repeated further so far as the
condition is met. (Lower limit is 30 rps.)
Th1
‒
10
＜
Th2
≦
Th1
‒
6
Compressor’s target max. speed or changed
value of the same is maintained.
Th2
‒
6
＜
Th1
Changed compressor’s target max. speed is
increased at a rate of 1 rps/20 seconds.
(e)
When the unit is operated automatically with the wired remote control connected, the cooling operation is controlled accord-
ing to the display temperatures while the setting temperature is compensated by +1°C during dehumidifying or by +2°C during
heating.
2) When this control has continued for more than 30 minutes continuously, the following wind direction control is per
-
formed.
a) When the vertical wind direction is set at other than the vertical swing, the aps 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 po
-
sition.
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