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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 values of fan speed and air flow
volume indicate on the table are measured
when the louver is inclined downward.
Fan speed and air flow volume broadly
vary with position of louver.
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 temperature
and room temperature.
(Fig. 1)
(Fig. 2)
(Table 1) Indoor fan air flow rate
+4.5 (+2.5)
Ta
°F [°C]
+3.5 (+2.0)
+2.7 (+1.5)
+2.0(+1.0)
+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-10020
Fan speed Air flow rate Fan speed Air flow rate
(rpm) cfm (m3/h) (rpm) cfm (m3/h)
WF UH 1100 583 (991) 1200 648 (1101)
WE H 1100 583 (991) 1200 648 (1101)
WD UH M+ UH 1090 577 (980) 1200 648 (1101)
WC H H 1070 563 (957) 1180 635 (1079)
WB M+ M+ 980 505 (858) 1080 570 (968)
WA M 940 479 (813) 1020 531 (902)
W9 M L+ 890 446 (758) 980 505 (858)
W8 L 780 374 (636) 850 420 (713)
W7 L+ L- L+ 750 355 (603) 810 394 (669)
W6 L L 740 348 (591) 800 387 (658)
W5 L- UL L- 700 322 (547) 760 361 (614)
W4 UL UL 700 322 (547) 700 322 (547)
W3 SUL SUL 650 290 (492) 650 290 (492)
W2 SUL 500 191 (325) 500 191 (325)
W1 500 191 (325) 500 191 (325)
RAS-17LKV-UL, RAS-22LKV-UL
Fan speed
level
DRYHEATCOOL
RAS-15LKV-UL