Indoor Fan Motor Control - Toshiba RAS-M10PKVPG-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 PAP
WF UH UH/H
WE UH H
WD H M+
WC M+
WB M
WA M 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
Quiet
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
Cooling
Dry Fan speed
(rpm)
1120
1120
UH
1100
M+ H
980
M+
930
/L+ M 780
750
L+ 710
L 640
L 620
L- L- 540
UL
520
UL SUL/SL-
500
SL
480
SL-
440
(Fig. 1)
Fan speed
W7
(L + M) / 2
WA
(M + H) / 2
WD
W5
(Fig. 2)
RAS-M10PKVPG-E
Heating
Air flow rate Fan speed
3
(rpm)
(m /h)
700 1160
700
1140
690
990
590
950
550
840
420 840
400 750
370 660
300 650
290 640
220 560
200
550
190
500
170
480
140
440
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FILE NO. SVM-18047
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.
Air flow rate
3
(m /h)
750
730
610
570
470
470
400
320
310
300
240
230
190
170
140