Read Sharp AU-X138 Service Manual online
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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