1996 Buick Roadmaster Owner's Manual - Page 132

Ventilation System Adjust the direction of airflow by m0vin.g the louvered vents. For mild outside temperatures, when little heating or cooling is needed, press theA/C button on the manual system to deactivate theair conditioner. RECIRC, DEFOG and DEFROST must also be off. Air will flow through the heater outlets. Adjust the temperature control lever to a comfortable level. The automatic system will recirculate the air inside the vehicle for maximum air conditioning performance if the inside of the vehicleis hot. The automatic system will return to circulating outside air once the vehicle interior has cooled down. Defogging and Defrosting DEFROST: This setting directs the airflow to the Fresh air from outside your vehicle flows through your defrost outlet and some to the heater outlet. Use defrost when you wantto remove fog orice from the windshield. Buick when the vehicle moving. Whenthe vehicle is is Fan speed will be controlled automatically, or you can not moving, you can outside air to flow through by get choose another speed by pressing the button. FAN selecting any air choice, except the window rear defogger (and any speed if you have the manual fan DEFOG: This setting directs the airflow to the defrost climate control system). outlet to keep the windshield clear and to the heater outlet for passenger comfort.