Climate Control System - Raptor, Vehicles With: Dual Automatic Temperature Control (DATC) - System Operation and Component Description: Off

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

When OFF is selected:

the recirculated air request button is disabled.
the air inlet door closes, preventing outside air and allowing only recirculated air.
the A/C request button is disabled.
the blower motor is off.