Toshiba RAS-22SAV-E - 2. Indoor fan motor control

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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 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)
Fan speed Air flow rate Fan speed Air flow rate Fan speed Air flow rate Fan speed Air flow rate
(rpm) (m3/h) (rpm) (m3/h) (rpm) (m3/h) (rpm) (m3/h)
WF UH 1100 991 972 1200 1101 1200 1080
WE H 1100 991 972 1200 1101 1200 1080
WD M+ 1090 980 962 1200 1101 1200 1080
WC H 1070 957 940 1180 1079 1180 1059
WB M+ 980 858 843 1080 968 1080 951
WA 940 813 799 1020 902 1020 886
W9 M L+ 890 758 745 980 858 980 843
W8 L 780 636 626 850 713 850 702
W7 L+ L- L+ 750 603 594 810 669 810 659
W6 L L 740 591 583 800 658 800 648
W5 L- UL L- 700 547 540 760 614 760 605
W4 UL UL 700 547 540 700 547 700 540
W3 SUL SUL 650 492 486 650 492 650 485
W2 SUL 500 325 324 500 325 500 324
W1 500 325 324 500 325 500 324
RAS-18SKV-E
M
COOL
HEAT
DRY
RAS-18SKVR-E RAS-22SKV-E RAS-22SKVR-E
1100
1100
1090
1070
980
890
780
750
740
700
700
650
500
500
940
Fan speed
level