Re[2]: re A/C recirc question

[rochow@pixelmagic.com]

>The recirc can be made to work wiht the A/C off but the Recirc must be on >for 
>the A/C system to be functional. Air is drawn through the evap when the 
>recirc door is closed, when it is open air is drawn from the outside, and 
>with the A/C on and the door open the evap freezes up rather quickly >(because 
>there is no air moving across the evap). The door can be wired to be >selected 
>with the A/C off but with the A/C on the door must be closed.

But why is there a recirc switch at all, then? If each function
required the other, the current setup would be senseless.