AY-XP13CR (serv.man8). Functions - Sharp Air Conditioner Service Manual (repair manual). Page 5

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Clean

Contaminated

Determined 
clean

Determined 
contaminated

Reference 
value

High (2 sec.)
Med (3 sec.)
Low (4 sec.)

15k

Ω

15k

Ω

13k

Ω

13k

Ω

R7

R6

(2) Dust detection by using the sensor

The output voltage from the optical allergen sensor is input into the indoor unitÅfs microcomputer to detect the air
contamination (dust). This method inputs the sensor voltage per unit of time and calculates the relative fluctuation
to determine whether the air is contaminated or not.

(3) Operation of the indoor unit's microcomputer

As with the odor sensor, the microcomputer starts constantly detecting the air contamination level after 1 minute of
the operation start.

(4) Switching sensitivity of the optical allergen sensor

The sensitivity can be adjusted. However, both sensors will be adjusted
to the same level.
The air contamination is detected in the following seconds at each sensor
level.

The indicator panel will change each time you press
the DISPLAY button in the following manner.

The room temperature and
POWER MONITOR are displayed.

The outdoor temperature and
POWER MONITOR are displayed.

No display.

When the room temperature or the outdoor temperature is displayed, the POWER MONITOR
will light up in 4 levels for COOL and HEAT modes (3 levels for DRY mode), to indicate the
operation power. When the air conditioner is operating at maximum power in the COOL and
HEAT modes, "Power" will light and "Eco" will turn off on the indicator panel.

• The displayed temperatures are rough estimates and may vary from the actual temperatures.
• Temperature display ranges

Room temperature: 0

°C ~ 40°C (   is displayed when less than 0°C and   when higher

than 40

°C)

Outdoor temperature: -9

°C ~ 45°C (   is displayed when less than -9°C and   when higher

than 45

°C)

•

  is displayed during the first 90 seconds of operation while the temperatures are being

detected.

• Only the room temperature can be displayed for 5 seconds when the unit is not in operation.

Room Temp.

Lamp

Temperature

Indicator

POWER MONITOR

Outdoor Temp.

Lamp

DISPLAY

FULL

POWER