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AH-S22AW2
AH-S25AW2
1. INDOOR UNIT
1-1 Temperature Adjustment
a. Normal control
Proportional control (P control)
When the temperature zone changes, this control
changes the frequency by one rank to move
closer to the set value.
Integral control (I control)
When the temperature zone has set time in the
same zone, this control changes the frequency by
one rank to move closer to the set value.
(Excluding the h zone.)
b. Initial control
Cooling
+1.33
+1.00
+0.66
+0.33
SET VALUE
-0.33
-0.66
Dry
+1.33
+1.00
+0.33
MEMORY SET VALUE
-1.00
The initial frequency is determined as shown in
the tables below based on the difference between
the temperature adjustment setting at the
beginning of operation and the room temperature.
After operation begins, normal control is
performed and therefore the correspondences in
the tables below will not hold.
c. Temperature adjustment
Cooling
Room
Frequ-
temp.
ency
zone
code
c
9
d
8
e
7
f
5
g
3
h
2
i
1
j
OFF
The temperature adjustment range is changed by
changing the operating mode with the operation
switch.
FUNCTIONS
c
d
e
f
g
h
i
j
e
f
g
h
i
Dry
Room
Frequ-
temp.
ency
zone
code
e
4
f
3
g
2
h
1
i
OFF
(1) Cooling
If the room temperature is in the c zone when
operation begins,proportional/integral control is
not performed,
frequency code 9 power until the h zone is
reached. When the h zone is reached, the
frequency changes to the frequency code
determined by fuzzy calculation, and after
thatproportional/integral control is performed.
(2) Dry
After operation begins, 2 minutes (running at the h
zone) of the room temperature is stored in
memory, and that becomes the set value.
(3) Circulation
The frequency code 0 is sent to the outdoor
machine, and only the fan of the indoor machine
runs, the compressor does not run.
1-2 Indoor fan control
(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) 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.
COOLING
Fan speed : High / Med / Low
11
10
9
8
7
6
5
4
3
2
1
OFF
OFF
1
2
Frequency cord
Fan speed : Automatic
11
10
9
8
7
6
5
4
3
2
1
OFF
OFF
1
2
Frequency cord
14
and the machine runs at
High
Med
Low
3
4
5
6
7
8
9
3
4
5
6
7
8
9
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