Indoor Fan Motor Control; In Cooling Operation - Toshiba RAS-M10GKCVP-E 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
COOL
Fan speed
FAN
level
ONLY
WF
WE
WD UH
WC H
WB M+
WA
W9 M
W8
W7 L+
W6 L
W5 L–
W4 UL
W3 SUL
W2
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-M10GKCVP-E
DRY
Fan speed Air flow rate
(rpm) (m
1630
1480
1400
1350
1200
1110
980
910
L+ 900
L 890
L– 880
UL 730
SUL 580
430
400
(Fig. 1)
Fan speed
W6
(L + M) / 2
W9
(M + H) / 2
WC
(Fig. 2)
RAS-M13GKCVP-E
Fan speed Air flow rate
3
/h) (rpm)
684 1650
609 1530
569 1440
544 1390
468 1240
423 1150
358 1010
323 910
318 900
313 890
308 880
232 730
157 580
82 430
67 400
– 31 –
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-M16GKCVP-E
Fan speed Air flow rate
3
(m /h) (rpm)
694 1650
634 1580
589 1550
564 1530
488 1380
443 1230
373 1080
323 970
318 960
313 950
308 940
232 790
157 640
82 490
67 400
3
(m /h)
694
659
644
634
559
483
408
353
348
343
338
263
187
112
67