Indoor Fan Motor Control - Toshiba RAS-13G2KCVP-T 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
+1.0 c
d
+0.5
e
Tsc
(Table 1) Indoor fan air flow rate
RAS-10G2KCVP-T
Fan speed
Cool PAP Dry
Fan speed
Level
WF
UH/H
WE
UH
WD
H UH
WC
M+ M+ H
WB
M+
WA
M M/L+ M
W9
W8
L+ L+
W7
L L
W6
L- L
W5
UL L- L-
W4
UL
W3
SUL UL
SUL/SL-
W2
SL
W1
SL-
Operation flow and applicable data, etc.
MANUAL
Indication
L
L+
M
M+
H
Quiet
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)
RAS-13G2KCVP-T
Cooling Cooling
Air Flow rate Fan speed Air Flow rate
3
(rpm) (m /h) (rpm) (m
1060 661 1100
1060 661 1100
1040 647 1080
900 527 930
900 527 930
760 409 780
760 409 780
690 349 710
600 274 640
520 205 560
500 187 540
480 173 520
460 155 500
450 147 480
440 142 440
(Fig. 1)
Fan speed
W7
(L + M) / 2
WA
(M + H) / 2
WD
W5
(Fig. 2)
RAS-18G2KCVP-T
Cooling
Fan speed Air Flow rate
3 3
/h) (rpm) (m /h)
690 1120 713
698 1120 713
676 1120 713
551 960 576
551 950 567
423 800 442
423 800 442
368 730 384
305 660 322
243 580 255
224 560 243
205 540 224
187 520 205
173 500 187
142 440 142
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FILE NO. SVM-15058
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 values of fan speed and air flow
volume indicate on the table are
measured when the louver is inclined
downward. Fan speed and air flow
volume broadly vary with position
of louver.
1) When setting the fan speed to L,
L+, M, M+,H or Quiet 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.