Indoor Fan Motor Control - Toshiba RAS-10BKV-E1 Service Manual

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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

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