HVAC Failure

[thejack]

Thanks kabel, I thought the same as you did although I had the switch changed just a month ago. In my 986 the steering column switch isn't the updated one so I've been able to change only the electric switch.
To be honest, just yesterday, I had a stereo head unit breakdown. It just gone off without a known reason and come back operative after minutes. This has led me to think abuto the switch, but I tried to move the key turning off and on again with no success.
Will check. But I'd like to know if the audi head unit could fit my 986 without other issues.

[thejack]

Today have noticed another strange thingh about my hvac unit. I put the car out of the garage ant let it at idle just not to turn the engine on and off just a while after. The engine ran for about 20 min and the for all the time the car ran ac was working great. Then I decided to go for a small ride and, surprisingly, the ac got off after few meters driving.

Is this still relating to the head unit malfunction or have I to point in another direction?

[thejack]

Well, yesterday the new head unit arrived. I put the new one on and nothing changed.

The a/c compressor starts and after a while it shuts down wirth no way to make it working again.

The ioce icon lights up as long as I keep the button pushed.

This isn't a head unit related issue.

Some tips??

[extanker]

put gauges on the high/low a/c lines

[thejack]

Done today. Pressure is ok.

Any other check?