1998 Cadillac Catera Owner's Manual - Page 151

In cold weather, when the system senses the need for As heat, airflow will be directed out the floor outlets. of the interiortemperature approaches a desired setting, the blower speed will decrease. maintain interior To comfort, the airflow may move to the instrument panel air outlets and floor outlets (bi-level mode). bright On sunny days in cold weather, the airflow come out of may the air conditioning outlets(AC mode) to maintain comfort and prevent stuffiness. If your vehicle is sitting out a hot day and have on you the climate control system set automatic operation, for the air will first flow out the floor air outlets of during cool down. That normal. This is to expel hot air from is the air outlets. As the air is cooled, the airflow will move through the air conditioning outlets. To avoid blowing coldair in cold weather, the system will delay turning on the until warm air is available. The fan length of delay depends on the outsidei temperature, ar engine coolant temperature or the time since the engine 'was last started. As the coolant warms up, the blower fan speed will gradually increase andair will flow from the heater outlets, with some airflow to the windshield to prevent fogging under most normal conditions. If you leave your vehicle, the system will remember the control setting the next time you start your engine, except for recirculation and rear defrost (heated backlite). Each ignition cycle cancels recirculation. Manual Operation You may manually adjust the air delivery mode or fan speed. + HEATElUDEFROST: This setting directs air to d the floor outlets and toward the windshield. w e AC: This setting directs airflow through middle the instrument panel outlets. d +e -bo ! BI-LEVEL: This setting directs air into your d vehicle in two ways. Cool air is directed the upper to portion of your body through the middle instrument panel outlets while warm air is directed to the floor. + HEATER: This setting directs warm air through @ the floor outlets. Some warm air is diverted to the windshield to minimize fogging. DEFROST Press this button to quickly remove fog or frostfrom the windshield (the blower works in high-speed). This setting sends most the of airflow to the windshield with only a small amount to the floor outlets.