1999 Cadillac DeVille Owner's Manual - Page 166

yellowblue Air Conditioning On hot days, open the windows long enough to let hot inside air escape. This reduces the time it takes for your vehicle to cool down. Then keep your windows closed for the air conditioner to work its best. With the digital cluster climate control panel, press the AUTO/ECON button to assist in cooling air and in maintaining proper airflow. Adjust the temperature to a comfortable setting by pressing the blue button to cool your vehicle and pressing the red button to warm your vehicle. Press the fan button arrows up or down to adjust the fan speed. If your vehicle has a console climate control panel (which is standard with the analog cluster), press the AC button or the TEMP/AUTO knob to turn the system on. The system will cool and dehumidify the air inside the vehicle. Also while in the AUTO mode, the system will use recirculation as necessary to cool the air. You may also need to adjust the interior temperature and the fan speed as needed. When the air conditioner is on, you may sometimes notice slight changes in your vehicle's engine speed and power. This is normal because the system is designed to cycle the compressor on and off to keep the desired temperature. Heating With the digital cluster climate control panel, press the AUTO/ECON button to direct airflow and to help save fuel. Adjust the temperature, if necessary, by pressing the blue button to decrease temperature and pressing the red button to increase temperature. Also remember to adjust the fan speed by pressing the up or down arrow. If your vehicle has a console climate control panel (which is standard with the analog cluster), press the MODE button to select heater. Adjust the interior temperature to a comfortable level and if the fan speed needs adjusting, press the up or down arrow. With each system, outside air will be brought in and sent through the floor, air conditioning or bi-level outlets (depending on the condition). The heater works best if you keep your windows closed while using it. Defogging and Defrosting On cool, humid days, use defog (digital cluster climate control panel only) to keep the windshield and side windows clear. Use defrost to remove fog or ice from the windshield quickly in extremely humid or cold conditions. 3-10