Indoor Fan Motor Control; In Cooling Operation - Toshiba RAS-M10PKVP-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, respectively. (Table 1)
COOL ON
Fan speed setup
AUTO
(Fig. 2)
Ta
[ °C ]
+2.5
a
+2.0
b
+1.5
c
+1.0
d
+0.5
e
Tsc
*3 : Fan speed = (M + –L) × 3/4 + L
*4 : Fan speed = (M + –L) × 2/4 + L
*5 : Fan speed = (M + –L) × 1/4 + L
RAS-M10PKVP-ND
Fan speed level
Fan speed Air flow rate
WF
WE UH
WD H
WC M+
WB
WA M+
W9
W8 L+
W7 L
W6 L–
W5 UL
W4
W3 SUL
W2
W1
Operation flow and applicable data, etc.
MANUAL
Indication Fan speed
L
L+ (L + M) / 2
M WA
M+ (M + H) / 2
H WD
Fan speed
M+(WC)
*3
*4
*5
L(W7)
*6 : Fan speed = (H –L+) × 3/4 + L+
*7 : Fan speed = (H –L+) × 2/4 + L+
*8 : Fan speed = (H –L+) × 1/4 + L+
(Linear approximation from M+ and L)
(Table 1) Indoor fan air flow rate (Cooling, Dry)
RAS-M10PKVP-E RAS-M13PKVP-E
RAS-M13PKVP-ND
Fan speed Air flow rate
(rpm) (m 3 /h) (rpm)
1200 690 1260
1200 690 1260
1140 640 1210
1080 600 1130
1020 560 1060
960 510 990
910 480 930
850 430 870
790 390 810
770 370 770
700 320 700
650 290 650
600 250 600
600 250 600
520 190 520
(Fig. 1)
Hi Power
W7 W8
(L + M) / 2
WC
(M + H) / 2
WE
Hi Power
H (WD)
*6
*7
*8
L+(W8)
RAS-M16PKVP-E
RAS-M16PKVP-ND
Fan speed Air flow rate
(m 3 /h) (rpm)
730 1340
730 1340
690 1280
640 1200
590 1120
530 1040
490 980
450 930
400 880
370 770
320 700
290 650
250 600
250 600
190 520
– 55 –
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 the fan speed mode is
manual and TA < 22°C and the
compressor stops, the fan speed
is controlled from W2
(20 seconds) to 0 rpm
(40 seconds).
3) 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.
4) When the fan speed mode is
AUTO and the compressor stops,
the fan speed is controlled from
W2 (20 seconds) to 0 rpm
(40 seconds).
RAS-M18PKVP-E
RAS-M18PKVP-ND
Fan speed Air flow rate
(m 3 /h) (rpm) (m
790 1450
790 1450
750 1390
690 1310
630 1220
570 1130
530 1070
490 1000
450 930
370 800
320 700
290 650
250 600
250 600
190 520
3 /h)
845
845
805
745
680
620
575
525
475
380
310
275
240
240
185