Automatic Operation

Automatic Temperature Control (ATC) system operation is activated by pressing AUTO button (ATC system ON button) and selecting temperature. See Figure. Temperature control is automatic when selected temperature is 65-85°F (18-29°C). Automatic temperature control is canceled when full heat (90°F or 32°C) or full cool (60°F or 16°C) is selected, OFF button is pressed, or blower motor speed and mode are manually selected.

ATC system maintains selected temperature by controlling blower motor speed and mode setting. Temperature can be reset within specified range without affecting ATC system operation. Function display and a Light Emitting Diode (LED) in rocker-type push button switches will be illuminated to indicate active ATC function, mode and blower motor speed. See Figure.