1996 Ford Windstar Owner's Manual - Page 112

In m (OFF), air supply is shut off from all outlets and all blower motor operation is stopped. Use this setting when driving through an area where outside air is unpleasant or dusty. RWARNING Operating with the Function Selector Knob in OFF or in MAX A/C for extended periods of time in cold weather can result in fog buildup on interior glass surfaces. This fogging can make it difficult to see the road for safe driving. Operating in the A/C, Q (PANEL), S (PANEL/FLOOR), R (FLOOR), P (DEFROST/FLOOR) and V (DEFROST) positions will help prevent fogging. Adjust the temperature as necessary for comfort. In S (PANEL/FLOOR), approximately equal amounts of airflow are directed to the instrument panel registers and the floor outlets. This setting will engage the A/C compressor, thus providing you with an additional A/C mode. In R (FLOOR), most of the system's air supply is directed to the floor outlets with a small amount going to the windshield and side window demisters. In P (DEFROST/FLOOR), approximately equal amounts of air are directed to the windshield and floor outlets with a small amount to the side windows. NOTE: If outside air temperatures are above approximately 45˚F (7˚C), the P (DEFROST/FLOOR) and V (DEFROST) positions will also automatically engage the air-conditioning compressor in order to reduce the humidity in the air and aid in clearing the inside glass. Adjust the Temperature Control Knob as necessary for comfort. 110