Sharp AY-X127E Service Manual ▷ View online
AH-X127E
AU-X127E
AU-X127E
AY-X127E
AE-X127E
AE-X127E
21
The fan goes off 30 seconds after the compressor goes
off.
off.
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.
*During Cooling / Dry
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.
starting again for 3 minutes. It also prevents starting for
80 seconds immediately following plugging into the
power outlet.
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.
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:
Operation is as follows:
*During Heating
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.
heating, the compressor is turned on and off to prevent
overheating.
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
Heating
(24˚C)
Heating
(23˚C)
Heating
(22˚C)
Cooling
(25˚C)
(Room temperature
- 2°C)
Cooling
(26˚C)
Cooling
(27˚C)
Dry
Room
temperature
(˚C)
temperature
(˚C)
21
26
0
10
18
31
34
External air
temperature (°C)
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.
3°C
Room
temperature
temperature
Timer set time
1
hour
Timer operation starts
Stops
1°C
Stops
Timer set time
1
hour
Timer operation starts
Room
temperature
temperature
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
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)
AH-X127E
AU-X127E
AU-X127E
AY-X127E
AE-X127E
AE-X127E
22
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.
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.
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
Operates at setting of 18
°
C.
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
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.
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
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.
(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.
goes off, the compressor relay will stay on.
15
min
min
165
min
min
At least
120 min
120 min
Air conditioner OFF
ON
OFF
OFF
Air conditioner
operation
operation
Compressor
relay
relay
100 sec.
ON
ON
ON
OFF
ON
OFF
Air conditioner
operation
operation
Compressor
relay
relay
100 sec. 80 sec.
ON
ON
OFF
ON
ON
Air conditioner
operation
operation
Compressor
relay
relay
100 sec.
AH-X127E
AU-X127E
AU-X127E
AY-X127E
AE-X127E
AE-X127E
23
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 13 minutes.
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 13 minutes.
AU-X127E is not provided with the heating function.
(2) Defrosting conditions
The temperature of the outdoor heat exchanger and the temperature of the outdoor are detected by 2 sensors, and if
it stays in the preset defrost zone for approximately 40 seconds, defrosting start is enabled.
If defrosting is enabled when the defrost mask time ends, defrosting is performed. If defrosting is not enabled, the
machine waits until defrosting is enabled.
Defrost mask times is 20 minutes.
it stays in the preset defrost zone for approximately 40 seconds, defrosting start is enabled.
If defrosting is enabled when the defrost mask time ends, defrosting is performed. If defrosting is not enabled, the
machine waits until defrosting is enabled.
Defrost mask times is 20 minutes.
The defrosting zone is decided by outdoor temperature
and outdoor heat exchanger temperature.
and outdoor heat exchanger temperature.
(3) During defrosting
When defrosting begins, the compressor stops. Approximately 1 minutes later, the compressor reactivates in the
refrigeration cycle, and the outdoor heat exchanger is defrosted.
Each mode is as follows:
The outdoor fan is stopped
The operating frequency is 115Hz
The indoor fan is stopped
refrigeration cycle, and the outdoor heat exchanger is defrosted.
Each mode is as follows:
The outdoor fan is stopped
The operating frequency is 115Hz
The indoor fan is stopped
(4) Defrost stop
When defrosting time exceeds 13 minutes
When the temperature of the outdoor heat exchanger rises above approximately 10˚C
Defrost stop is determined by either of the above conditions, and the compressor is stopped.
At the same time, the outdoor fan go ON. The compressor is reactivated in the heating cycle 1 minutes after it was
stopped, and normal control resumes.
When the temperature of the outdoor heat exchanger rises above approximately 10˚C
Defrost stop is determined by either of the above conditions, and the compressor is stopped.
At the same time, the outdoor fan go ON. The compressor is reactivated in the heating cycle 1 minutes after it was
stopped, and normal control resumes.
Defrost
mask time
Defrost
mask time
Defrost
mask time
Heating
begins
Defrosting
Max. 13 min.
Defrosting
Max. 13 min.
AH-X127E
AU-X127E
AU-X127E
AY-X127E
AE-X127E
AE-X127E
24
2-2 Frequency control
(1) AC current peak control
(1) AC current peak control
This control lowers the compressor frequency if the AC current exceeds the set values. If the current is below the set
values, the compressor frequency will not be raised above that frequency, as the maximum frequency, for 1 minute.
values, the compressor frequency will not be raised above that frequency, as the maximum frequency, for 1 minute.
(2) Control for prevention of indoor heat exchanger overheating
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, the frequency is lowered by approximately 5 to 10 Hz. After that, the
frequency is lowered by approximately 5 to 10 Hz once every 60 seconds. When the temperature of the indoor heat
exchanger goes below the overheating prevention line, the frequency is raised by approximately 5 Hz once every 60
seconds, and normal operation is restored.
If the frequency is lowered to minimum frequency without the temperature of the indoor heat exchanger decreasing and
this condition lasts for 1 minute, the compressor will be stopped.
operating frequency or the nature of the operation, the frequency is lowered by approximately 5 to 10 Hz. After that, the
frequency is lowered by approximately 5 to 10 Hz once every 60 seconds. When the temperature of the indoor heat
exchanger goes below the overheating prevention line, the frequency is raised by approximately 5 Hz once every 60
seconds, and normal operation is restored.
If the frequency is lowered to minimum frequency without the temperature of the indoor heat exchanger decreasing and
this condition lasts for 1 minute, the compressor will be stopped.
(3) Control for prevention of outdoor heat exchanger overheating
If the temperature of the outdoor heat exchanger exceeds approximately 57
°
C during cooling, the operating frequency
is lowered by approximately 5 to 15 Hz. After that, the frequency is lowered by approximately 5 to 10 Hz once every
120 seconds. When the temperature of the outdoor heat exchanger goes below approximately 55˚C, the frequency is
raised by approximately 5 Hz once every 60 seconds, and normal operation is restored.
If the frequency is lowered to minimum frequency without the temperature of the outdoor heat exchanger decreasing
and this condition lasts for 1 minute, the compressor will be stopped.
120 seconds. When the temperature of the outdoor heat exchanger goes below approximately 55˚C, the frequency is
raised by approximately 5 Hz once every 60 seconds, and normal operation is restored.
If the frequency is lowered to minimum frequency without the temperature of the outdoor heat exchanger decreasing
and this condition lasts for 1 minute, the compressor will be stopped.
(4) Control for prevention of discharge overheating
If the discharge temperature exceeds approximately 105
107
°
C during compressor operation, the operating
frequency is lowered by approximately 5 Hz. After that, the frequency is lowered by approximately 5 Hz once every 60
seconds. When the temperature of the outdoor heat exchanger goes below approximately 104
seconds. When the temperature of the outdoor heat exchanger goes below approximately 104
106˚C, the frequency
is raised by approximately 5 Hz once every 60 seconds, and normal operation is restored.
If the frequency is lowered to minimum frequency without the discharge temperature decreasing and this condition lasts
for 1 minute, the compressor will be stopped.
If the frequency is lowered to minimum frequency without the discharge temperature decreasing and this condition lasts
for 1 minute, the compressor will be stopped.
(5) Control for prevention of indoor heat exchanger freezing
If the temperature of the indoor heat exchanger goes below approximately 5
°
C during cooling, the operating frequency
is lowered by approximately 5 Hz. After that, the frequency is lowered by approximately 5 Hz once every 60 seconds.
When the temperature of the indoor heat exchanger rises above approximately 5
When the temperature of the indoor heat exchanger rises above approximately 5
°
C, the frequency is raised by
approximately 5 Hz once every 60 seconds, and normal operation is restored.
If the temperature of the indoor heat exchanger goes down to approximately 0
If the temperature of the indoor heat exchanger goes down to approximately 0
°
C and this condition continues for 4
minutes, the compressor is stopped. When the temperature rises above approximately 2˚C, normal operation is
restored.
restored.
Operating frequency
During normal operation
During full power operation
Above 50 Hz
54
58
50 to 43 Hz
53
57
43 to 37 Hz
52
56
Below 37 Hz
51
54
Overheating prevention line
AE-X127E
AE-X127E,
AU-X127E
Model
Set value
During heating
During cooling
Approximately 11.3 A
Approximately 10.4 A
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