Toshiba RAS-09EAV-UL, Service Manual

Page: 32 / 164

– 3 2 –
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 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 and room temperature.
(Fig. 1)
(Fig. 2)
(Table 1) Indoor fan air flow rate
+4.5 (+2.5)
Ta
°F [°C]
+3.5 (+2.0)
+2.7 (+1.5)
+2.0 (+1.0)
+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)
FILE NO. SVM-13069
Fan speed Air flow rate Fan speed Air flow rate
(rpm) cfm (m3/h) (rpm) cfm (m3/h)
WF UH 1210 336 (571) 1510 433 (735)
WE H 1210 336 (571) 1510 433 (735)
WD UH M+ UH 1170 321 (546) 1480 422 (717)
WC H H 1120 303 (515) 1430 404 (686)
WB M+ M+ 1040 274 (465) 1280 350 (594)
WA M 1000 248 (421) 1220 328 (557)
W9 M L+ 960 235 (400) 1150 302 (514)
W8 L 870 200 (340) 1000 248 (421)
W7 L+ L- L+ 850 194 (330) 980 241 (409)
W6 L L 760 159 (270) 920 219 (372)
W5 L- UL L- 760 159 (270) 900 212 (360)
W4 UL UL 700 141 (240) 840 190 (323)
W3 SUL SUL 650 118 (200) 770 165 (280)
W2 SUL 500 65 (110) 620 110 (187)
W1 500 65 (110) 520 74 (126)
RAS-12 E KV-UL
Fan speed
level
DRY HEAT COOL
RAS-09 E KV-UL