15
AH-X079E/X099E
AY-X079E/X099E
(1) Control for indoor freezing prevention
If the temperature of the indoor heat exchanger
stays below approximately 0
°
C for four minutes
during cooling or dry, this control stops the
compressor. Over 2˚C the compressor will run
again.
(2) Control for cold air blowing prevention
When heating begins, this control stops the indoor
fan until the temperature of the indoor heat
exchanger reaches 26
°
C. It also stops the fan if
the temperature goes below 23
°
C during
operation.
(3) Indoor fan and operating frequency
The indoor fan has 12 speeds, and changing is
done in four stages, "Auto", "High", "Med", and
"Low". The relations between the indoor fan
speed, air quantity setting, operating frequency,
and indoor heat exchanger are shown in the
following charts.
AH-X099V
AH-X099A
1-2 Indoor fan control
This control uses the thermistor for the indoor heat
exchanger to control cold air blowing prevention, the
indoor fan, and overheating prevention.
53
50
47
44
38
32
26
H
G
F
E
D
C
B
A
(˚C)
Cold air blowing
prevention line
Temperature of indoor heat exchanger
Differential
3˚C
OFF
1
2
3
4
5
6
7
8
9
10
11
1
2
3
4
5
6
7
8
9
OFF
Fan speed
Frequency cord
Fan speed : High / Med / Low
High
Med
Low
OFF
1
2
3
4
5
6
7
8
9
10
11
1
2
3
4
5
6
7
8
9
OFF
Fan speed
Frequency cord
Fan speed : Automatic
COOLING
OFF
1
2
3
4
5
6
7
8
9
10
11
1
2
3
4
5
6
7
8
9
OFF
Fan speed
Frequency cord
Fan speed : High / Med / Low
12
A
B
C
A
B
C
Low
D - H
Med
D - H
High
D - H
OFF
1
2
3
4
5
6
7
8
9
10
11
1
2
3
4
5
6
7
8
9
OFF
Fan speed
Frequency cord
Fan speed : Automatic
12
A
B
C
A
B
C
G, H
D
E
F
HEATING
12
11
10
9
8
7
6
5
4
3
2
1
0
1
2
3
4
e, f zone
g zone
h zone
i zone
Dry
Operating frequency code
Fan speed
12
11
10
9
8
7
6
5
4
3
2
1
0
High
Circulation
Operating frequency code
Fan speed
Med
Low
