Toshiba RAS-22N3AV2-A, Service Manual

Page: 28 / 109

–
27
–
+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)
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, respectively.
(Table 1)
(Fig. 2)
Description
∗∗∗
(Fig. 1)
FILE NO. SVM-13003
∗∗∗∗∗
Symbols
UH: Ultra High
H : High
M+:
M : Medium
L+ : Low+
L- : Low–
UL : Ultra Low
SUL
: Super Ultra Low
L : Low
WF UH 1250 1156
WE H 1250 1156
WD M+ 1250 1156
WC H 1200 1101
WB M+ M 1050 938
WA 1020 902
W9 M L+ 980 858
W8 L 850 702
W7 L+ L- L+ 810 659
W6 L L 800 648
W5 L- UL L- 760 605
W4 UL UL 700 540
W3 SUL SUL 650 485
W2 SUL 500 324
W1 500 324
Fan speed
(rpm)
Air flow rate
(m
3
/h)
Fan speed
level
COOL HEAT DRY
(Table 1) Indoor fan air flow rate
broadly very with position of louver
* The values of fan speed and air
flow volume indicate on he table
are measured when the louver is
inclined downward.
Fan speed and air flow volume
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 leve
shown in Fig. 2 and Table 1
according to the setup tempera
ture, room temperature, and
heat exchanger temperature.