Control Panel Settings: Def/FLR
WARNING: This page is about a different car, the 1994 Mercury Grand Marquis and 1994 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
In DEF/FLR (defrost/floor) mode, panel doors move to defrost position. The floor/defrost door moves to mid-position so outside air is divided between defroster outlets and floor outlets. Compressor will not operate if outside temperature is less than 50°F (10°C).