Toshiba RAS-B10U2FVG-E, Service Manual

Page: 28 / 97

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)
L
L+
M
M+
H W7
(L + M) / 2
WA
(M + H) / 2
WD
Indication Fan speed
Fan speed setup
COOL ON
AUTO
+2.5
TA-Tsc
[°C]
+2.0
+1.5
+1.0
+0.5
Tsc
a
b
c
d
e
M+(WC)
*3
*4
*5
L(W7)
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 appro ximation
from M+ and L)
Hi Power Fan speed
H+(WD)
*6
*7
*8
L+(W8)
*6 : Fan speed = (H − L+) x 3/4 + L+
*7 : Fan speed = (H − L+) x 2/4 + L+
*8 : Fan speed = (H − L+) x 1/4 + L+
(Linear appro ximation
from H and L+)
Hi-POWER
W8
(L + M) / 2
WC
(M + H) / 2
WE
Fan speed
level
Fan speed Air flow rate Fan speed Air flow rate Fan speed Air flow rate
(rpm) (m3/h) (rpm) (m3/h) (rpm) (m3/h)
WF 530 498 560 528 650 624
WE UH 530 498 560 528 650 624
WD H 500 468 540 510 630 600
WC M+
450 414 490 459
560 528
WB 4 50 4 1 4 4 90 4 59 560 528
WA M 400 366 440 408 500 468
W9 360 324 390 354 450 414
W8 L+ 3 50 3 15 3 90 3 54 450 414
W7 L 300 258 340 300 400 366
W6 L − 260 216 270 228 360 324
W5 UL 260 216 270 228 340 300
W4 240 198 250 210 320 282
W3 SUL 240 198 240 198 300 258
W2 240 198 240 198 300 258
W1 240 198 240 198 300 258
RAS-B13U2FVG
Series
RAS-B18U2FVG
Series
Cool
RAS-B10U2FVG
Series
(table 1) Indoor fan air flow rate <Cooling>
FILE NO. SVM-18048
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