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Item
2. Indoor fan
motor control
Operation flow and applicable data, etc.
<In heating operation>
Description
1) When setting the fan speed to L,
L+, M, M+ or H on the remote
controller, the operation is per-
formed with the constant speed
shown in Fig. 3 and Table 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. 5 according to the set
temperature and room temperature.
3) Min air flow rate is controlled by
temperature of the indoor heat
exchanger (Tc) as shown in Fig. 4.
4) Cold draft prevention, the fan
speed is controlled by temperature
of the indoor heat exchanger (Tc)
as shown in Fig. 6.
[In starting and in stability]
(Fig. 3)
(Fig. 4)
(Fig. 5)
Cold draft preventive control
(Fig. 6)
Fan spee
d
A
U
T
O
Basi
c
fan
co
ntr
ol
* No limitation while fan speed MANUAL mode is in stabilit
y.
* A: Wh
e
n T
sc
≥
24
,
A is 24
,
and when Tsc < 24
,
A is Ts
c
Tsc: Set valu
e
TS
C
T
A
[
˚
C
]
b
–
0
.
5
c
–1.0
d
–1.5
e
–2.0
f
–2.5
g
–5.0
–
5
.
5
L+ (W9)
M+ (WD)
*1
*2
*3
H
(
WE
)
H
(
WE
)
Line-approximate
H and S
U
L with Tc
.
SUL
(
W2
)
Stop
46 46
T
c
34
45 45 33
33 33 21
32 32 20
*A+4 *A+4 *A+4
*A-4 *A-4 *A-4
Fan speed MAN
U
AL in startin
g
Fan speed AUTO in stabilit
y
Fan speed AUTO in startin
g
L
L+
M
M+
H
W8
(L + M) / 2
WA
(M + H) / 2
WE
Indication Fan speed
Fan speed setup
HEAT
ON
AUTO
YES
NO
MANUAL
TC ≥ 42˚C
Min air flow rat
e
c
ontro
l
Tc
52
51
42
41
Limited to Min WD tap
*Fan spee
d
=
(
TC
–
–
W8
)
+ W
8
N
o
limi
t
*
*1: Fan speed = (M + -L+) x 1 4 + L+
*2: Fan speed = (M + -L+) x 2 4 + L+
*3: Fan speed = (M + -L+) x 3 4 + L+
(Calculated with linear approximation from M+ and L+)
FAN AUTO
FAN Manual
In starting
• Until 12 minutes passed after operation start
• When 12 to 25 minutes passed after operation
start and room temp. is 3°C or lower than set temp.
• Room temp. < Set temp. –4°C
In stability
• When 12 to 25 minutes passed after operation start
and room temp. is higher than (set temp. –3°C)
• When 25 minutes or more passed after operation start
• Room temp. ≥ Set temp. –3.5°C
5) In order to prevent cold draft when
compressor stop during heating
operation. Then louver will move to
upper position and fan speed will
FILE NO. SVM-07008
reduce or off.