Toshiba RAS-M24N3KV2-E - Indoor Fan Motor Control

– 22 –
+2.5
Ta
[
°C
]
+2.0
+1.5
+1.0
+0.5
Ts c
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)
(Table 1) Indoor fan air flow rate
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.
(Fig. 1)
Fan
speed
level
WF
WE
WD
WC
WB
WA
W9
W8
W7
W6
W5
W4
W3
W2
W1
COOL HEAT DRY
UH
H
M+
H
M+ M
ML+
L
L+ L– L+
L– UL L–
UL UL
SUL SUL
SUL
Fan speed Air flow rate
(rpm) (m
3
/h)
1250 1156
1250 1156
1250 1156
1230 1134
1130 1034
1070 957
1030 913
900 768
860 669
850 713
810 669
750 603
650 492
500 325
500 325
FILE NO. SVM-12087