Toshiba RAS-10N3AV2-A Service Manual page 33

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
(Table 1) Indoor fan air flow rate
Fan speed
level COOL HEAT DRY
WF UH
WE H
UH
WD UH M+
WC H H
M
M+
WB M+
WA M
W9 M L+
W8 L
W7 L+ L- L+
W6 L L
W5 L- UL L-
W4 UL UL
W3 SUL SUL
W2 SUL
W1
Operation flow and applicable data, etc.
MANUAL
Indication
L
L+
M
M+
H
Air volume AUTO
M+(WB)
*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(W6)
from M+ and L)
RAS-10N3KV2-A RAS-13N3KV2-A
Fan speed Air flow rate Fan speed
(rpm) (m3/h) (rpm)
1210 571 1300
1210 571 1300
1170 546 1300
1120 515 1300
1040 465 1150
1100
1000 440
1050
960 415
920
870 359
870
850 347
820
760 291
760 291 770
700 253 720
650 222 670
500 129 520
500 129 500
* The values of fan speed and air flow
(Fig. 1)
Fan speed
W6
1) When setting the fan speed to L,
(L + M) / 2
W9
(M + H) / 2
WC
2) When setting the fan speed to
(Fig. 2)
RAS-16N3KV2-A
Air flow rate Fan speed Air flow rate
(m3/h) (rpm) (m3/h)
620 1510 735
620 1510 735
620
1480 717
620
1430 686
514
1280 594
495
1220 557
465
1150 514
372
1000 421
359
980 409
320
920 372
297 900 360
266 840 323
234 770 280
141 620 187
129 520 126
– 32 –
FILE NO. SVM-13001
Description
* Symbols
UH : Ultra High
H : High
M+ : Medium+
M : Medium
L+ : Low+
L : Low
L- : Low–
UL : Ultra Low
SUL : Super Ultra Low
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.
L+, M, M+ or H on the remote
controller, the operation is
performed with the constant
speed shown in Fig. 1.
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 temperature
and room temperature.