Climate control has another function?

[Martin Suryadarma]

Hi everyone,

I have an 89 Audi 100 with the climate control. Yesterday it was blinking
an error code, so I pressed the "Outside Temp" button with the "Off"
button together. But then I forgot what I should press, so I pressed some
buttons (don't remember what).

So the climate control ends up looking like this. The "Off" is lit, but
there are numbers on the display. And the numbers increase as I accelerate
(as high as 70s) and decrease as I decelerate. The number is 00 when I'm
stopped. What does that number represent? 

Then I just turned the climate control on, and the numbers changed into
normal temprature. And when I turned it off, it's all back to normal. 

Any ideas? Thanks!

Martin