2002 Pontiac Bonneville Owner's Manual - Page 180
2002 Pontiac Bonneville Manual
Page 180 highlights
RECIRC (Recirculation): Press this button to limit the amount of outside air entering your vehicle. This is helpful when you are trying to quickly cool the interior of the vehicle or limit odors entering the vehicle. RECIRC may be selected in all manual airflow modes except FRONT defrost. If you select RECIRC while in FRONT defrost, the RECIRC light will flash to let you know that this is not allowed by the system. This is to prevent fogging. When the weather is cool or damp, operating the system in recirculation, without also using the air conditioning, may cause fogging of the windshield. To clear the fog, switch back to outside air, select defog or FRONT defrost mode and increase the fan speed. To avoid refogging of the windows, minimize your use of recirculation under these conditions and turn the air conditioning on to help dehumidify the air. A/C (Air Conditioning): Press this button to turn the air conditioning compressor on and off. This system will cool and dehumidify the air inside your vehicle. The air conditioning compressor will also run when you select the FRONT defrost mode and outside temperatures are approximately 40_F (4_C) or higher. When in AUTO mode, air conditioning will automatically be used as needed to maintain the selected temperature setting. AUTO (Automatic Control): Press the AUTO button for automatic control of the air delivery mode, fan speed, air conditioning and recirculation. Whenever AUTO is pressed, the display will show the current settings for five seconds before returning the display to exterior temperature and AUTO. The fan speed and mode of airflow delivery will vary as the system maintains the selected temperature setting. The air conditioning compressor will run at outside temperatures over approximately 40_F (4_C). The air inlet will normally be set to OUTSIDE AIR. If it is hot enough outside, the air inlet mode will automatically switch to recirculation. To find you comfort zone for the automatic settings, start with a temperature setting of 75_F (24_C) and allow about 20 minutes for the system to regulate. Then turn the TEMP knobs up or down to adjust the temperature setting if necessary. If you choose the temperature setting of 60_F (15_C), the system will remain at the maximum cooling setting and fan speed. If you choose the temperature setting of 90_F (33_C), the system will remain at the maximum heat setting and fan speed. Choosing either maximum setting will not cause the system to heat or cool any faster. 3-6