Toshiba RAS-24N3AV2-A, Service Manual

Page: 29 / 129

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+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)
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, respectively.
(Table 1)
(Fig. 2)
Description
∗∗∗
* 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+ 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
.
(Fig. 1)
FILE NO. SVM-13004
(Table 1) Indoor fan air flow rate
∗∗∗∗∗
Symbols
UH: Ultra High
H : High
M+:
M : Medium
L+ : Low+
L- : Low–
UL : Ultra Low
SUL
: Super Ultra Low
L : L ow
Fan speed
level
COOL HEAT DRY
Fan speed
(rpm)
Air flow rate
(m
3
/h)
WF UH 1180 1059
WE H 1180 1059
WD M+ 1180 1059
WC H 1130 1005
WB M+ M 1010 875
WA 960 821
W9 M L+ 960 821
W8 L 850 702
W7 L+ L- L+ 820 670
W6 L L 800 648
W5 L- UL L- 760 605
W4 UL UL 700 540
W3 SUL SUL 650 485
W2 SUL 500 324
W1 500 324