Toshiba RAS-137SKV-E - Indoor Fan Motor Control

– 30 –
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,
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
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-08011
L
W6
Indication
Fan speed
M
W9
H
WC
Fan speed
level COOL HEAT DRY
WF UH
WE H
WD UH M+
WC H
WB M+
WA
W9 M L+
W8 L
W7
L+ L- L+
W6 L L
W5 L- UL L-
W4 UL UL
W3 SUL SUL
W2 SUL
W1
UH
H
M
M+
M
Fan speed Air flow rate
(rpm) (m3/h)
1470 743
1470 743
1440 723
1390 691
1250 601
1190 563
1120 518
970 421
950 408
890 370
870 357
810 318
750 280
500 119
RAS-167SKV-E
Fan speed Air flow rate
(rpm) (m3/h
1240 630
1240 630
1190 596
1140 563
1040 496
100 469
960 443
870 383
850 369
760 309
760 309
700 269
650 236
500 135
500 135
RAS-137SKV-E
600
183