Toshiba RAS-M10UKV-E3 - 8-1-4. Prevent-Freezing Control

– 52 –
Table 8-1-2
NOTE :
• UL : Ultra Low, SUL : Super Ultra Low
8-1-6. Louver Control
(1) Vertical air flow louvers
Positions of vertical air flow louvers are automati-
cally controlled according to the operation status
(AUTO, COOL, DRY, HEAT). Besides, positions of
vertical air flow louvers can be arbitrarily set by
pressing the [SET] button. The louver position which
has been set by the [SET] button is stored in micro-
computer, and the louver is automatically set at the
stored position in the next operation.
(2) Swing
If the [AUTO] button is pressed during running
operation, vertical air flow louvers start swinging.
When the [AUTO] button is pressed again, swinging
stops.
8-1-7. Indoor Fan Control (DC Fan Motor)
The indoor fan is operated by motor speed non-step
variable DC drive system motor. For flow rate, motor
speed is controlled manually in three steps (LOW,
MED, HIGH), and with the unit of 10 rpm from upper
limit to lower limit in AUTO mode as described in
Table 8-1-2. It is not selected by relay, so selecting
sound does not generate.
8-1-4. Prevent-Freezing Control
The indoor heat exchanger sensor detects refriger-
ant vapor temperature in COOL/DRY operation. If
the temperature is below the specified value, com-
pressor motor speed is reduced so that operation is
performed in temperature below the specified value
to prevent-freezing of indoor heat exchanger.
8-1-5. P. M. V. (Pulse Modulating Valve)
Using P.M.V., refrigerant flow of refrigeration cycle is
varied for the optimum temperature. Controlling
each unit separately by four P.M.V. corresponds to
difference of pipe length, fan speed, and unit tem-
perature.
If an error occurs on cycle temperature when power
source of the air conditioner has been turned on,
and if start/stop times of the outdoor unit are 30
times, move the valve once until it hits on the stopper
for positioning of the valve. In this case, ticktack
sound may be heard.
Remote
Motor speed Air flow rate Motor speed Air flow rate Motor speed Air flow rate
mode mode
Control
( rpm )
( m
3
/h )
( rpm )
( m
3
/h )
( rpm )
( m
3
/h )
H HIGH 1190 560 1210 590 1350 670
M 1080 510 1130 530 1250 610
MED 1100 510 1130 530 1250 610
M MED 1000 460 1050 490 1150 550
LOW 960 440 990 460 1070 500
L 950 430 950 430 1050 490
L LOW 910 400 910 400 980 450
L 850 370 850 370 920 410
L 950 430 950 430 1050 490
L 910 400 910 400 980 450
L 850 370 850 370 920 410
UL 720 300 750 310 920 410
SUL 660 260 700 280 800 340
H HIGH 1250 610 1290 630 1370 690
M 1200 580 1280 620 1360 680
MED 1160 550 1190 560 1270 620
M MED 1060 500 1100 510 1180 560
LOW 1010 460 1030 480 1110 510
L 1050 490 1050 490 1150 550
L LOW 940 430 940 430 1020 480
L 930 420 930 420 1000 460
M13 M16
DRY
Heating
and Fan
only
Cooling
and Fan
only
M10
FanOperation
+
-
+
-
+
+
+
-
+
+
+
+