System Airflow Description - Dual Automatic Temperature Control: Panel/Floor

WARNING: This page is about a different car, the 2004 Lincoln Aviator. However, it is still accessible from the selected car via links, so may be relevant.

When PANEL/FLOOR is selected:

The RECIRC button is enabled. If the RECIRC button is pressed (indicator on) the air inlet door vacuum control motor is at full vacuum, closing off outside air to the passenger compartment. If the RECIRC button is not selected (indicator off) the air inlet door vacuum control motor will be at no vacuum, admitting only outside air into the passenger compartment.
The defrost door, panel door and floor door vacuum control motors are at full vacuum, directing airflow to the instrument panel A/C registers and to the floor duct. A small amount of airflow from the defroster duct and side window demisters will be present.
Temperature control can be adjusted by directing the airflow through and around the heater core. Only when A/C compressor operation has been selected by pressing the A/C request switch (indicator on) can the airflow temperature be cooled below that of the ambient (outside) air temperature.
The A/C request switch is enabled. When the A/C request switch is pressed (indicator on) the A/C compressor will operate if the outside air temperature is above approximately 4°C (39.5°F).
The blower motor is on.