1998 Buick Century Owner's Manual - Page 150

The red lights indicate a warmer temperature than that of the driver. The blue lights indicate a cooler temperature than that of the driver. MID: This setting directs air through the instrument panel outlets. Manual Control If you prefer to manually control the heating, cooling and ventilation in your vehicle, you can select airflow direction, fan speed, outside orrecirculated air and air compressor operation with the following buttons: FLOOR: This setting sends most of the air through the ducts near the floor. The rest comes out of the defroster and side window vents. FRONT: This setting brings in outside airand directs most of the air through the defrostvent. Some of the air also goes to the floor ductsand the side window defogger outlets. The indicatoron the button will light and WINDSHIELD will be lit in the display. The airconditioning compressor will run automatically in this setting unless the outside temperature is below 40°F (4°C). VENT This pushbutton turns the air conditioning compressor on and off. The indicator lights when the compressor is turned off. Recirculation is not permitted when the compressor is off. The system will try to control the temperature automatically, but without the compressor. Vent is not permitted in FRONT defrost mode. If the vent button is pushed while in FRONT defrost mode, the indicator will light for one second and then turn off. AIR FLOW This control has several settings control to the direction of airflow when the systemnot in AUTO. is To access the various modes available, continue to press the AIR FLOW rocker button up and down until the desired mode appears in the display: WINDSHIELD/FLOOR: This setting directs half of the air to the floor ducts half to the defroster and and side window vents. 0 MIDlFLOOR: This setting directs half of the air through the instrument panel outlets. Most of the remaining air isdirected through the floor ductsand a little to the defroster and side window vents. 3-8