Display Information

TM 10-4110-262-13&P

0004 00

(12) Fahrenheit Indicator Light

When this light is on, it indicates that the temperature is being displayed in degrees Fahrenheit (F).

Display Information

With the unit or the controller OFF, the display screen will be dark nothing will appear on the display

screen. When the unit ON/OFF key is pressed on, the unit operation light will be lit.

The display screen will display the return air temperature or the setpoint temperature, depending on the

current operating mode.

When the unit is switched off, the screen is once again blank and the unit operation indicator light goes

OFF.

Display Operating Data

During normal operation, the display shows the return air temperature on the screen. To display the

setpoint, press the setpoint key. This will display the setpoint temperature on the screen for 10 seconds,

after which, the display will again show the return air temperature.

Initiate Manual Defrost

You may start a manual defrost cycle anytime the evaporator coil temperature is below 36 F (2 C).

1. Press the manual defrost key. The defrost indicator light will show that the unit is in the defrost mode.

The unit will automatically return to the proper operating mode when the defrost cycle is finished. The

unit will return to the cooling mode automatically when the evaporator coil temperature reaches 48 F

(9 C).

2. To end the defrost cycle before automatic termination, press the ON/OFF key to turn the unit off.

0004 00-7