2001 Buick Century Owner's Manual - Page 150

On cool, but sunny days, the sun may warm your upper body, but your lower body may not be warm enough. You can use BI-LEV and set the temperature levers to a comfortable setting. The system will bring in outside air and direct it to your upper body, while sending slightly warmed air to your lower body. You may notice this temperature difference more at some times than others. Push the A/C button on for cooling. Automatic Control For the most efficient operation, you should set the system temperature and press AUTO. The system will select the best fan speed and airflow settings to keep you comfortable. The air conditioning compressor will run if the outside temperature is above 40_F (4_C). You may notice a delay of two to three minutes before the fan comes on at start up in cool weather. Temperature Control The TEMP switch sets the temperature for the entire system when the light on the DUAL button isn't lit. If the DUAL button light is lit, this master temperature control sets the temperature for the driver only. Press the up arrow to raise the temperature and press the down arrow to lower the temperature. The display will show your selection for a few seconds, then the outside temperature will be displayed. If you push the AUTO button, the system will control the fan speed and airflow. For the automatic system to function, the temperature must be set between 61_F (16_C) and 89_F (31_C). The driver's temperature and passenger's temperature settings will be automatically maintained even if manual overrides have been selected except for settings at 60_F (15_C) and 90_F (32_C). Dual Automatic ComforTempt Climate Control (If Equipped) With this system, you set a temperature. You can then either let the system automatically control airflow direction and force to maintain the temperature, or you can manually adjust it. The system works best if you keep your windows closed while using it. 3-4