Indoor Fan Motor Control; In Cooling Operation - Toshiba RAS-M13PKVP-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 fl ow 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-E
Fan speed level
Fan speed Air flow rate
(rpm)
WF 1200
WE UH 1200
WD H 1140
WC M+ 1080
WB 1020
WA M 960
W9 910
W8 L+ 850
W7 L 790
W6 L– 770
W5 UL 700
W4 650
W3 SUL 600
W2 600
W1 520
Operation fl ow and applicable data, etc.
MANUAL
Indication Fan speed
L W7
L+ (L + M) / 2
M WA
M+ (M + H) / 2
H WD
Fan speed
Hi Power
M+(WC) H (WD)
*3
*4
*5
L(W7) L+(W8)
*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-M13PKVP-E
Fan speed Air flow rate
3
(m /h) (rpm)
690 1260
690 1260
640 1210
600 1130
560 1060
510 990
480 930
430 870
390 810
370 770
320 700
290 650
250 600
250 600
190 520
(Fig. 1)
Hi Power
W8
(L + M) / 2
WC
(M + H) / 2
WE
*6
*7
*8
RAS-M16PKVP-E
Fan speed Air flow rate
3
(m /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
– 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 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
temperature, 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).
3
(m /h)
790
790
750
690
630
570
530
490
450
370
320
290
250
250
190