1997 Buick Century Owner's Manual - Page 149

Driver's Temperature Knob The center knob sets the temperature forthe driver's outlets. Turn the knob toward red (clockwise) for warmer air. Turn it toward blue (counterclockwise) for cooler air. this setting unless the outside temperature is below 40°F (4°C). (Even when the compressor is running, you can control the temperature.) Passenger's Temperature Lever The bottom lever adjusts the air temperature the on passenger's side independent of the temperature set by the driver. Slide the lever toward the right to raise the temperature. Slidethe lever toward the left to lower the temperature. Mode Knob The right knob has several settingsto control the direction of airflow. To access the various modes available, turn the mode button to the desired mode. MAX: This setting recirculatesmuch of the air inside your vehicle and sends it through the instrument panel outlets. The air conditioning compressor will run automatically in this settingunless the outside temperature is below 40°F (4°C). (Even when the compressor is running, you can control the temperature.) NORM: This setting brings in outside air and sends it through the instrument panel outlets. The air conditioning compressor will run automatically in BI-LEV This setting bringsin outside air and directs it two ways. Half of the airis directed through the instrument panel outlets. Most of the remaining air is directed through the floor ductsand a little to the defrost and side window vents. The air conditioning compressor will run automatically in this settingunless the outside temperature is below 40°F (4°C). (Even when the compressor is running, you can control the temperature.) VENT This setting brings in outside air and directs it through the instrument panel outlets. HTR: This setting sendsmost of the air through the ducts near the floor. The rest comes out of the defroster and side window vents. BLEND: This setting allows half of the air to go tothe floor ductsand half to the defroster and side window vents. The air conditioning compressor will run automatically in this setting unless the outside temperature is below 40°F (4°C). (Even when the compressor is running, you can control the temperature.) FRONT This setting directs most of the air through the defroster and sidewindow vents. Some of the air goes to the floor ducts and the side window vents. 3-5