Toshiba RAS-13S3KV-E Service Manual page 27

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
Fan speed
level
Cool
WF
WE UH
WD H
WC M+
WB
WA M
W9
W8 L+
W7 L
W6 L-
W5 UL
W4
W3 SUL
W2
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)
(Table 1) Indoor fan air flow rate
Mode
Fan speed Air flow rate
Heat Dry
(rpm)
UH 1250
H 1250
M+ UH 1200
H 1090
M M+ 1080
M 980
L+ 980
L L+ 870
L- 770
L 740
UL L- 720
UL 670
SUL/SL- 670
SUL 520
500
(Fig. 1)
Fan speed
W6
(L + M) / 2
W9
(M + H) / 2
WC
(Fig. 2)
RAS-13S3KV-E
Cooling
Fan speed Air flow rate
(m3/h) (rpm)
590 1300
590 1300
565 1250
496 1120
490 1080
428 1020
428 970
359 870
297 860
274 800
266 770
235 700
235 600
141 520
129 500
– 26 –
FILE NO. SVM-15008
Description
* Symbols
UH : Ultra High
H : High
M+ : Medium+
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.
Heating
(m3/h)
627
627
590
510
490
436
422
359
354
315
297
252
195
141
129