Sharp AH-X108 Service Manual ▷ View 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
AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
26
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
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
1-3 Hot keep
If the room temperature is in the j or k zone during
heating, the compressor is turned on and off to
prevent overheating.
The fan goes off 30 seconds after the compressor
goes off.
heating, the compressor is turned on and off to
prevent overheating.
The fan goes off 30 seconds after the compressor
goes off.
(1) Control for indoor overheating prevention
If the temperature of the indoor heat exchanger
exceeds the overheating prevention line during
heating due to the operating frequency or the
nature of the operation, this control lowers the
frequency by 4 to 15 Hz. When the temperature
goes below the overheating prevention line sixty
seconds later, normal operation is restored.
exceeds the overheating prevention line during
heating due to the operating frequency or the
nature of the operation, this control lowers the
frequency by 4 to 15 Hz. When the temperature
goes below the overheating prevention line sixty
seconds later, normal operation is restored.
Operating
frequency
frequency
Over 50 Hz
Overheating prevention line (°C)
50 to 43 Hz 43 to 37 Hz Below 37 Hz
54
57
53
56
52
55
51
54
During normal
operation
operation
During full
power operation
power operation
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
(2) Control for indoor freezing prevention
If the temperature of the indoor heat exchanger
stays below approximately 0
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.
compressor. Over 2˚C the compressor will run
again.
(3) 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
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.
(4) 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.
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/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
27
Zone Compressor intermittent time
Fan
After "3 min. on - 3 min.off"
is repeated 4 times, the
compressor goes off, and
only the fan continues to
repeat “3 min. on - 8
min.off”.
is repeated 4 times, the
compressor goes off, and
only the fan continues to
repeat “3 min. on - 8
min.off”.
J
K
3 min. on - 3 min. off
3 min. on - 8 min. off
Same as Compressor
1-4 Automatic operation
The operating mode and temperature setting are
determined by the room temperature and the external
air temperature.
determined by the room temperature and the external
air temperature.
The operating mode will changeover automatically
with the following conditions.
with the following conditions.
Set temp.
(24˚C)
Set temp.
(23˚C)
Set temp.
(22˚C)
(Outdoor temp.)
27.8
26.8
28.8
[˚C]
0
10
[˚C]
(Indoor temp.)
1. From cooling to heating
Cooling mode will changeover to heating mode when
condition of indoor temperature 1.8˚C lower than the
set temperature conditions for 5 minutes.
condition of indoor temperature 1.8˚C lower than the
set temperature conditions for 5 minutes.
2. From heating to cooling
Heating mode will change over to cooling mode when
condition of indoor temperature 4.8˚C higher than the
set temperature conditions for 25 minutes under Hot
keep condition.
condition of indoor temperature 4.8˚C higher than the
set temperature conditions for 25 minutes under Hot
keep condition.
10
Set temp.
(26˚C)
Set temp.
(25˚C)
Set temp.
(24˚C)
Set temp.
(25˚C)
Set temp.
(26˚C)
(Outdoor temp.)
22.3
22.2
22.4
[˚C]
18
28
34
[˚C]
(Indoor temp.)
When the set temperature is adjusted within the range
of
of
±
2˚C by the remote control's key. (
), the
changeover judgement room temp. will also be shifted
within the range of
within the range of
±
2˚C.
1-5 ON-timer
The ON-timer is set by pressing the ON-timer button.
In order to attain the set temperature at the set time,
the operation starting time is corrected by neuro and
fuzzy computing one hour before the set time.
In order to attain the set temperature at the set time,
the operation starting time is corrected by neuro and
fuzzy computing one hour before the set time.
1-6 OFF-timer
The OFF-timer is set by pressing the OFF-timer
button. Operation is as follows:
button. Operation is as follows:
Cooling
Heating
Heating
Set temperature
By fuzzy computing
Set the shift up time
Set the shift up time
Cooling setting + 1°C
Heating setting - 3°C
Heating setting - 3°C
Final
Dry
Same as above
(Final setting + 1°C)
(Final setting + 1°C)
*During Heating
3°C
Room
temperature
temperature
Timer set time
1
hour
Timer operation starts
Stops
*During Cooling / Dry
1°C
Stops
Timer set time
1
hour
Timer operation starts
Room
temperature
temperature
1-7 Swing louvre
The louvre is moved by a stepping motor to perform
swing and fixing in the set position.
If the "FLOW DIRECTION" button is prossed during
swing, it will stop. If the "FLOW DIRECTION" button is
prossed while it is stopped, it will swing.
swing and fixing in the set position.
If the "FLOW DIRECTION" button is prossed during
swing, it will stop. If the "FLOW DIRECTION" button is
prossed while it is stopped, it will swing.
1-8 Restart control
Once the compressor stops, this control prevents it
from starting again for 3 minutes. It also prevents
starting for 80 seconds immediately following plugging
into the power outlet.
from starting again for 3 minutes. It also prevents
starting for 80 seconds immediately following plugging
into the power outlet.
1-9 One-hour operation
If this button is pressed when operation is
stopped, operation will begin and then stop after 1
hour. If pressed when it is operating, will stop after
one hour.
stopped, operation will begin and then stop after 1
hour. If pressed when it is operating, will stop after
one hour.
1-10
Full power operation
Immediately begins cooling or heating at
maximum power and air flow. Full power stops
after 1 hour.
(During heating) Operates at setting of 32
Immediately begins cooling or heating at
maximum power and air flow. Full power stops
after 1 hour.
(During heating) Operates at setting of 32
°
C.
(During cooling) Operates at setting of 18
°
C.
(24˚C) (23˚C) (22˚C)
Cooling
(25˚C)
FAN ONLY
Cold
(25˚C)
(Room temperature
- 2
°
C)
Cooling
Cooling
(Dry)
Room
temperature
(˚C)
temperature
(˚C)
21
29
0
16
18
(24˚C)
(25˚C)
(26˚C)
28
34
External air
temperature (
temperature (
°
C)
The external air temperature is determined by
detecting the temperature of the outdoor heat
exchanger.
detecting the temperature of the outdoor heat
exchanger.
Heating
AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
28
1-11
Preheat
When heating is stopped, supplies a small amount
of power to the compressor to make heating start
more quickly.
Operates when the indoor temperature sensor
and external air sensor detect that the room
temperature and outdoor heat exchange
temperature are low (below 18
When heating is stopped, supplies a small amount
of power to the compressor to make heating start
more quickly.
Operates when the indoor temperature sensor
and external air sensor detect that the room
temperature and outdoor heat exchange
temperature are low (below 18
°
C and 10
°
C,
respectively). Stops when the compressor
chamber temperature rises above 30
chamber temperature rises above 30
°
C.
Preheat does not operate for 2 hours after heating
is stopped. After that, it goes on for 165 minutes
and then stops for 15 minutes, repeatedly.
is stopped. After that, it goes on for 165 minutes
and then stops for 15 minutes, repeatedly.
ON
OFF
ON
ON
Air conditioner
operation
operation
Compressor
relay
relay
100 sec.
1-14
Power selector
Operation power "H " (High) or "L" (Low) can be
selected by switching the POWER SELECTOR
slide switch located above the AUX. button.
Operation power "H " (High) or "L" (Low) can be
selected by switching the POWER SELECTOR
slide switch located above the AUX. button.
Model
Name
Name
Power
Selector
Selector
Heating
Cooling
AY-X138E
H
11.2A
8.5A
7.8A
6.7A
8.5A
6.7A
9.0A
7.1A
6.3A
5.5A
7.1A
5.5A
L
AH-X138E
H
L
AY-X108E
H
L
AH-X108E
H
L
1-15
Auto Restart
When power failure occures, after power is
recovered, the unit will automatically restart in the
same setting which were active before the power
failure.
When power failure occures, after power is
recovered, the unit will automatically restart in the
same setting which were active before the power
failure.
Operating mode (Cool, Heat, Dry)
Temperature adjustment (within 22˚C range)
automatic operation
Temperature setting
Fan setting
Air flow direction
Power ON/OFF
Automatic operation mode setting
Swing louver
Fan setting
Air flow direction
Power ON/OFF
Automatic operation mode setting
Swing louver
Setting not memorized
Timer setting
Full power setting
Full power setting
AU-X138E is not provided with the heating
function.
function.
2. OUTDOOR UNIT
2-1 Defrost operation
(1) Overview
(1) Overview
Defrosting begins during heating if the conditions for
compressor operation time and the defrosting zone
are met.
When defrosting begins, the indoor and outdoor fans
stop.
Defrosting stops when the temperature of the outdoor
heat exchanger goes above approximately 10˚C or
defrosting time exceeds 12 minutes.
compressor operation time and the defrosting zone
are met.
When defrosting begins, the indoor and outdoor fans
stop.
Defrosting stops when the temperature of the outdoor
heat exchanger goes above approximately 10˚C or
defrosting time exceeds 12 minutes.
Defrost
mask time
Defrost
mask time
Defrost
mask time
Heating
begins
Defrosting
Max. 12 min.
Defrosting
Max. 12 min.
15
min
min
165
min
min
At least
120 min
120 min
Air conditioner OFF
1-12
Power ON start
If a jumper wire is inserted into the place indicated
power ON on the indoor control board, and the
power plug is inserted. cooling or heating will be
automatically determined by the room temperature
sensor on the main unit, and operation will begin.
If a jumper wire is inserted into the place indicated
power ON on the indoor control board, and the
power plug is inserted. cooling or heating will be
automatically determined by the room temperature
sensor on the main unit, and operation will begin.
1-13
Compressor relay RY1
(1) It is ON during operation, and when operation is
ON
OFF
OFF
Air conditioner
operation
operation
Compressor
relay
relay
100 sec.
ON
stopped, goes OFF after a delay of 100 seconds
(not immediately).
(not immediately).
(2) The minimum OFF time of the relay is 80
seconds. It will not go ON again before 80
seconds elapses.
seconds elapses.
(3) If air conditioner operation is turned on again
during the 100 seconds delay before the
compressor relay goes off, the compressor relay
will stay on.
compressor relay goes off, the compressor relay
will stay on.
ON
ON
OFF
ON
OFF
Air conditioner
operation
operation
Compressor
relay
relay
100 sec. 80 sec.
ON
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