Selecting the Temperature Scale

TM 10-4110-262-13&P

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Selecting the Temperature Scale

The temperature readings can be displayed in either the Celsius scale or the Fahrenheit scale. Dip

switch 3, located inside the controller is used to select which scale is displayed. Indicator lights next to

the digital display show that the scale has been selected. Place dip switch 3 in the ON position to display

temperatures in degrees Celsius.

Place dip switch 3 in the OFF position to display temperatures in degrees Fahrenheit. To change the

temperature scale selection:

1. Remove the cover from the back of the controller.

2. Place dip switch 3 in the proper position.

3. ON for Celsius

4. OFF for Fahrenheit

5. Replace the cover.

Dip Switch

Back of Controller with Cover Removed

Testing the Controller Box

The controller contains the thermometer and the thermostat. The thermometer and the thermostat share

the same digital display and use the same sensor. The thermometer displays the sensor temperature.

The thermostat compares the sensor temperature with the setpoint to determine the unit's operating

mode. The sensor is normally located in the evaporator return airflow.

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