Indoor Fan Motor Control - Toshiba RAS-10BKV-E1 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
Fan speed level Made
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
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 *4 : Fan speed = (M + –L) x 2/4 + L
*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-10BKV-E1
Cooling
Dry Fan speed Air flow rate
3
m /hr
(rpm)
1110
580
1110
580
UH 1080 530
1030
H 510
940
M+ 450
M 850 390
850
390
730
L+ 310
620
240
590
L 230
570
L- 220
UL 570 220
550
SUL/SL- 200
520
180
500
170
(Fig. 1)
Fan speed
W7
(L + M) / 2
WA
(M + H) / 2
WD
(Fig. 2)
Heating
Fan speed Air flow rate Fan speed
3
m /hr
(rpm) (rpm)
1110 1200
580
1110 1200
580
1060 525 1170
870 1120
400
870 1010
400
750 325 900
750 900
325
640 770
250
600 640
230
600 620
230
570 600
220
570 220 600
520 560
180
520 520
180
500 500
170
- 27 -
FILE NO. SVM-17030
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.
RAS-13BKV-E1
Cooling Heating
Air flow rate Fan speed Air flow rate
3
m /s
(rpm)
1200
620
1200
620
600 1080
1020
560
960
500
420 960
840
420
720
340
660
250
660
240
600
230
230 600
520
180
520
180
500
170
3
m /hr
620
620
530
500
470
470
380
305
265
265
230
230
180
180
170