Indoor Fan Motor Control; Fan Speed - Toshiba RAS-13BKV-E Service Manual

Item
2. Indoor fan <In cooling operation>
motor control
(This operation controls the fan speed at indoor unit side.)
The indoor fan (cross flow fan) is operated by the phase-
control induction motor. The fan rotates in 5 stages in
MANUAL mode, and in 5 stages in AUTO mode, respec-
tively. (Table 1)
COOL ON
Fan speed setup
AUTO
Ta
[ ˚C ]
+2.5
a
+2.0
b
+1.5
c
+1.0
d
+0.5
e
Tsc
Mode

Fan speed

level
Cool Heat
WF UH
WE UH H
WD H M+
WC M+
WB M
WA M
W9 L+
W8 L+ L
W7 L L-
W6 L-
W5 UL UL
W4
W3 SUL SUL/SL-
W2 SUL
W1
Mode
Fan speed
level
Cool Heat
WF UH
WE UH H
WD H M+
WC M+
WB M
WA M
W9 L+
W8 L+ L
W7 L L-
W6 L-
W5 UL UL
W4
W3 SUL SUL/SL-
W2 SUL
W1
Operation flow and applicable data, etc.
MANUAL
Indication
L
L+
M
M+
H
Air volume AUTO
M+(WC)
*3 *3 : Fan speed = (M + –L) x 3/4 + L
*4 : Fan speed = (M + –L) x 2/4 + L
*4
*5 *5 : Fan speed = (M + –L) x 1/4 + L
(Linear approximation
L(W7)
from M+ and L)
(Table 1) Indoor fan air flow rate
RAS-07BKV-E
Cooling
Fan speed Air flow rate Fan speed Air flow rate
DRY
3
(rpm) (m /hr) (rpm)
1080 540 1080
1080 540 1080
UH 1050 520 1030
H 1000 490 940
M+ 910 430 850
M 820 370 850
820 370 730
L+ 710 300 620
600 230 580
L 570 220 580
L- 550 200 550
UL 550 200 550
540 190 520
520 180 520
500 170 500
RAS-13BKV-E
Cooling
Fan speed Air flow rate Fan speed Air flow rate
DRY
3
(rpm) (m /hr) (rpm)
1200 620 1200
1200 620 1200
UH 1170 600 1080
H 1120 560 1020
M+ 1010 500 960
M 900 420 960
900 420 840
L+ 770 340 720
640 250 660
L 620 240 660
L- 600 230 600
UL 600 230 600
560 180 520
520 180 520
500 170 500
(Fig. 1)
Fan speed
W7
(L + M) / 2
WA
(M + H) / 2
WD
(Fig. 2)
RAS-10BKV-E
Heating Cooling
Fan speed Air flow rate
3 3
(m /hr) (rpm) (m /hr)
540 1110 580
540 1110 580
510 1080 530
450 1030 510
380 940 450
380 850 390
310 850 390
240 730 310
225 620 240
225 590 230
200 570 220
200 570 220
180 550 200
180 520 180
170 500 170
Heating
3
(m /hr)
620
620
530
500
470
470
380
305
265
265
230
230
180
180
170
- 29 -
FILE NO. SVM-16003
Description
* Symbols
UH : Ultra High
H : High
M+ : Medium+
M : Medium
L+ : Low+
L : Low
L- : Low–
UL : Ultra Low
SUL : Super Ultra Low
* The fan speed broadly varies due
to position of the louver, etc.
The described value indicates one
under condition of inclining
downward blowing.
1) When setting the fan speed to L,
L+, M, M+ or H on the remote
controller, the operation is
performed with the constant
speed shown in Fig. 1.
2) When setting the fan speed to
AUTO on the remote controller,
revolution of the fan motor is
controlled to the fan speed level
shown in Fig. 2 and Table 1
according to the setup tempera-
ture, room temperature, and heat
exchanger temperature.
Heating
Fan speed Air flow rate
3
(rpm) (m /hr)
1110 580
1110 580
1060 525
870 400
870 400
750 325
750 325
640 250
600 230
600 230
570 220
570 220
520 180
520 180
500 170