Toshiba RAS-137SAV-E6 - Indoor Fan Motor Control

– 28 –
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+ : 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.
(Fig. 1)
(Fig. 2)
(Table 1) Indoor fan air flow rate
+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)
FILE NO. SVM-13092
Fan speed
level COOL HEAT DR
Y
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 UH 1150 534 1200 565 1250 596
WE H 1150 534 1200 565 1250 596
WD UH M+ 1150 534 1200 565 1250 596
WC H 1100 502 1150 534 1200 565
WB M+ 950 409 1000 440 1050 471
WA 409
W9 M L+ 850 347 900 378 950 409
W8 L 700 253 750 284 800 316
W7 L+ L- L+ 650 222 700 253 750 280
W6 L L 650 222 700 253 750 280
W5 L- UL L- 600 191 650 222 700 253
W4 UL UL 580 179 620 203 650 222
W3 SUL SUL 550 160 580 179 600 191
W2 SUL 520 141 520 141 520 141
W1 500 129 500 129 500 129
RAS-107SKV-E6 RAS-137SKV-E6RAS-077SKV-E6
UH
H
M
M+
M
950
1000 440
378
900