– 29 –
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)
(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-10015
Fan speed
level
Fan speed Air flow rate Fan speed Air flow rate
(rpm)
(m3/h)
(rpm)
(m3/h)
WF UH 1300 620 1470 743
WE H 1300 620 1470 743
WD UH M+ UH 1250 590 1440 723
WC H H 1200 570 1390 691
WB M+ M+ M+ 1080 490 1250 601
WA M 1050 465 1190 563
W9 M L+ 990 434 1120 518
W8 L 870 359 970 421
W7 L+ L- L+ 860 353 950 408
W6
L L
770 297 890 370
W5 L- UL L- 770 297 870 357
W4 UL UL 720 266 810 318
W3 SUL SUL 670 234 750 280
W2 SUL 520 141 600 183
W1 500 129 500 119
RAS-
137SKV-E3
RAS-
167SKV-E3
DRY
HEAT
COOL
