Indoor Fan Motor Control - Toshiba RAS-B16N3KV2-E1 Service Manual

Item
2. Indoor fan <In cooling operation>
motor control
(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)
COOL ON
Fan speed setup
AUTO
Ta
[ ˚C ]
+2.5
a
+2.0
b
+1.5
c
+1.0
d
+0.5
e
Tsc
Mode
Fan speed
level
Cool Heat
WF UH
WE UH
WD H M+
WC M+
WB M
WA M
W9 L+
W8 L+
W7 L L-
W6 L-
W5 UL UL
W4
W3 SUL
W2 SUL
W1
Mode
Fan speed
level
Cool Heat
WF UH
WE UH
WD H M+
WC M+
WB M
WA M
W9 L+
W8 L+
W7 L L-
W6 L-
W5 UL UL
W4
W3 SUL
W2 SUL
W1
Operation flow and applicable data, etc.
MANUAL
Indication
L
L+
M
M+
H
Air volume AUTO
M+(WB)
*3 *3 : Fan speed = (M + –L) x 3/4 + L
*4 *4 : Fan speed = (M + –L) x 2/4 + L
*5 *5 : Fan speed = (M + –L) x 1/4 + L
(Linear approximation
L(W6)
from M+ and L)
(Table 1) Indoor fan air flow rate
RAS-B10N3KV2-E1
Cooling
Fan speed Air flow rate
Dry
(rpm) (m3/h)
1120 515
H 1120 515
UH 1120 515
H 1040 465
M+ 1000 440
M 960 415
900 378
L L+ 860 353
780 303
L 650 222
L- 620 203
UL 600 191
SUL/SL- 580 179
540 154
500 129
RAS-B16N3KV2-E1
Cooling
Fan speed Air flow rate
Dry
(rpm) (m3/h)
1510 758
H 1480 730
UH 1430 708
H 1280 615
M+ 1280 615
M 1150 534
1100 502
L L+ 980 428
920 390
L 900 378
L- 840 340
UL 840 340
SUL/SL- 770 297
620 203
520 141
(Fig. 1)
Fan speed
W6
(L + M) / 2
W9
(M + H) / 2
WC
(Fig. 2)
Heating
Fan speed Air flow rate Fan speed Air flow rate
(rpm) (m3/h) (rpm)
1200 565 1300
1200 565 1300
1100 502 1200
1000 440 1090
1000 440 1080
870 359 980
870 359 980
750 284 880
700 253 770
650 222 770
650 222 720
520 141 690
520 141 670
520 141 520
500 129 500
Heating
Fan speed Air flow rate
(rpm) (m3/h)
1510 758
1510 758
1480 730
1430 708
1280 615
1220 577
1150 534
1000 440
980 428
920 390
900 378
840 340
770 297
620 203
520 141
– 32 –
FILE NO. SVM-15006
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.
RAS-B13N3KV2-E1
Cooling Heating
Fan speed Air flow rate
(m3/h) (rpm) (m3/h)
627 1300 627
627 1300 627
565 1190 558
496 1080 490
490 1080 490
428 980 428
428 980 428
365 870 359
297 770 297
297 770 297
266 720 266
247 690 247
235 670 235
141 520 141
129 500 129