Gotya. The fan should be on and not care whether you ask for recirc or not and the allmighty truth is I don't know why


. In this 12+ year old car if it works well on recirc just keep it there. It's easier on the A/C anyway and would cool better as it is cooling air that has already been cooled vs ambient temp air. When you first get in the car parked in the sun it's best to open windows for a while either way.
I don't know why they give you a choice anyway. My own old Lincolns don't and will freeze a side of beef!!
You do still get a percentage of fresh air no matter what setting you chose for anything.
Now if that fan stays on with A/C off there's something to fix. This button is likely at fault and a big PIA to get at even to test out.
Let us know if you need to go further with this and I'll see what I can find out or others may find something

Stay cool,
T
Tom Greenleaf - MetroWest Boston - USA
http://www.acsource.com/ _________________________________________
http://www.autoacsystems.com/tomgreenleaf/