Latched Recirculated Air

Latched recirculated air
The inlet air source can be latched to recirculated air:
^ In the automatic mode, by pressing the fresh/recirculated air switch for less than 1.5 seconds; the audible warning sounds once.
^ In the economy or defrost modes, by pressing the fresh/recirculated air switch for 1.5 seconds or more; the audible warning sounds twice.