AE-XM24CR (serv.man8). Functions - Sharp Air Conditioner Service Manual (repair manual). Page 2

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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
pressed while it is stopped, it will swing.
The vertical adjustment louvre will change its angle
continuously.
Press the SWING button again when the vertical
adjustment louvre is at the desired position.
• The louvre will stop moving within the range shown

in the diagram.

• The adjusted position will be memorized and will be

automatically set to the same position when
operated the next time.

• When the mode of the indoor unit(s) later operated

is/ are different from those which is/are in
operation, 4 seconds later, a long BEEP will be
emitted and the temperature indicator on the
indicator panel will indicateÅh Åg and the
OPERATION lamp and TIMER lamp will blink
alternately.
This shows that the later operated unit(s) is/are not
working. In such case, change the remote
controlÅfs mode and send the same mode signal
which the other indoor unit(s) is/are operating in.
The BEEP will be emitted twice from the indoor
unit(s) later operated, and the unit(s) will operate.

How to rest the Blinking lamp:
Change the remote control's mode and send same
mode signal whitch the other indoor unit is operating in.
The BEEP will be emitted twice from the indoor unit later
operated, and the unit will operate.2.

(Only for models AY-XPM7CR/XPM9CR/XPM12CR)
(1) Outline of the odor sensor

The odor sensor is used to display the clean sign
during operation.
This odor sensor sensitively reacts to the various
air contaminations such as a volatile organic
solvent, fragrant materials, cigarette smoke, and
cigarette burning gas.
In the figure on the right, RS indicates a sensor
resistance, RL a load resistance, VRS a sensor
output voltage, and VC a sensor power supply
voltage. Their relation is expressed in the following
formula.

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.

Immediately begins cooling or heating at maximum
power and air flow.
(During heating)
Operates at setting of 32 ˚C.
(During cooling)
Operates at setting of 18 ˚C.

If a jumper wire is inserted into the place indicated
JP99 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.

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 the setting mode of one indoor unit differs
from the other, the indoor unit operated later may not
work.

• When one indoor unit is operating in HEAT mode,

the other unit can not operatre in COOL or DRY
mode.

• When one indoor unit is operating in COOL or DRY

mode, the other unit can not operate in HEAT
mode.

512(

µs)

12.8(ms)

Microcomputer 
output

Microcomputer 
input

Odor sensor

3

1

2

R

RL

C31

R41

R65

R64

R52

C32

Q7

Q8

R66

5V

S

V

RS

V

C

V

RS = 

C

R

V

S 

R

L +  

R

S 

When the air contamination level increases, the value
of the sensor resistance RS drops, which also lowers
the value of the sensor output voltage.
While detecting contamination, the microcomputer
outputs the following pulse to the transistor Q8, which
drives the heater with the built-in odor sensor using
the pulse.

COOL and DRY modes

HEAT  mode

The adjustment range
is narrower the SWING
range in order to pre-
vent condensation from
dripping.

The range is wide so the
air flow  can be directed
toward the floor.