Toshiba RAS-10N3ACV Series, Service Manual

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28
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Item
2. Indoor fan
motor control
Operation flow and applicable data, etc.
<In cooling operation>
(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)
Description
* Symbols
UH : Ultra High
H : High
M+ :
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.
(Fig. 1)
(Fig. 2)
+2.5
Ta
[˚C]
+2.0
+1.5
+1.0
+0.5
Tsc
a
b
c
d
e
M+(WB)
*3
*4
*5
L(W6)
Air volume AUTO
L
L+
M
M+
H
W6
(L + M) / 2
W9
(M + H) / 2
WC
Indication Fan speed
Fan speed setup
COOL ON
AUTO
MANUAL
*3 : Fan speed = (M + –L) x 3/4 + L
*4 : Fan speed = (M + –L) x 2/4 + L
*5 : Fan speed = (M + –L) x 1/4 + L
(Linear approximation
from M+ and L)
Fan speed
RAS-10SKV-E
level COOL HEAT DRY
RAS-10SKV-A
Fan speed Air flow rate
(rpm)
(m
3
/h)
WF UH 1350 607
WE H 1300 576
WD UH M+ UH 1250 554
WC H H 1200 522
WB M+ M M+ 1120 486
WA M 1100 468
W9 M L+ 1040 444
W8 L 960 402
W7 L+ L- L+ 910 376
W6 L L 880 360
W5 L- UL L- 830 334
W4 UL UL 800 318
W3 SUL SUL 700 266
W2 SUL 650 239
W1 600 213
(Table 1) Indoor fan and air flow rate
FILE NO. SVM-07008