Read Sharp AU-X138 Service Manual online
AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
25
FUNCTIONS
AH-X108E and AH-X138E are does not
provided with the heating function.
provided with the heating function.
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.
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.)
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
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.
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.
Cooling
Room
temp.
zone
temp.
zone
Frequency
Code
c
9
d
8
e
7
f
5
g
3
h
2
i
1
j
OFF
k
OFF
Heating
Room
temp.
zone
temp.
zone
Frequency
Code
k
OFF
(Hot keep fan)
j
1
i
1
h
2
g
3
f
4
e
5
d
6
e
7
f
5
g
3
h
2
i
1
Dry
Room
temp.
zone
temp.
zone
Frequency
Code
e
4
f
3
g
2
h
1
i
1
j
0
c
b
a
z
8
A
B
C
c. Temperature adjustment
The temperature adjustment range is changed by
changing the operating mode with the operation switch.
changing the operating mode with the operation switch.
(1) Heating
If the room temperature is in the z zone when
operation begins, proportional/integral control is not
performed, and the machine runs at frequency
code c full 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 that proportional/integral
control is performed.
operation begins, proportional/integral control is not
performed, and the machine runs at frequency
code c full 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 that proportional/integral
control is performed.
(2) Cooling
If the room temperature is in the c zone when
operation begins,proportional/integral control is not
performed, and the machine runs at 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.
operation begins,proportional/integral control is not
performed, and the machine runs at 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.
(3) 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.
zone) of the room temperature is stored in memory,
and that becomes the set value.
(4) 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.
machine, and only the fan of the indoor machine
runs, the compressor does not run.
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.
exchanger to control cold air blowing prevention, the
indoor fan, and overheating prevention.
53
50
47
44
38
38
32
26
H
G
F
E
D
C
B
A
(˚C)
Cold air blowing
prevention line
prevention line
Temperature of indoor heat exchanger
Differential
3˚C
3˚C
e
g
f
h
j
i
+2.00
+1.33
-1.00
+0.66
-1.33
Dry
MEMORY SET VALUE
c
d
e
f
g
h
i
j
k
+3.33
+2.66
SET VALUE
-0.66
-1.66
+0.66
+2.00
Cooling
+1.33
k
j
i
h
g
f
e
d
c
b
a
z
+4.66
+3.66
+2.66
+1.33
+0.66
SET VALUE
-0.66
-1.33
-2.00
-2.66
Heating
+2.00
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