a/c knobs
 

1981 911SC

the a/c has two knobs on the console. the right one is the on/off and fan speed.
What does the left knob do (with the swurly emblem). if you turn it completely clockwise, what does it do? What about counterclock wise?

Tx!John

On my '73 it controls how cold the air is. Rotating in the direction of the fatter end of the "swirl" = colder.

I believe Phoenix is correct, which really qualifies it as a 'wishful thinking' knob. When, with a 911's AC system, is the expelled air just too darned cold?