The first of many air con threads... I'm stumped.

[benjie]

Have had a quick search and can't find anything that helps.

My air con is playing up. Set at 21 today (26 degrees) and it went on full, then...

Windscreen vent - ice cold
Driver's vent (near headlight switch) - cool
Central vent - Ambient

Whatever setting I used (feet, top only, top and face etc) the temp stayed the same out of the vents.

Then I set it to LO - no change.

Then I set it back to 21... Lo and behold, the central/driver's vent then cooled down and became ice cold and it went on as normal.

That's weird and I don't understand it.

ECON light is not on, was re-gassed last August and no faults are showing in VCDS.

Any ideas anyone?

 

[kite]

A stuck flap motor could be causing the fault.
You can check their operation by dropping the glovebox and watching the flap arms move..

 

[Ste_Nova]

use the output test in vcds to excercise it

 

[Ian-83]

Carry out a basic settings.

 

[benjie]

Thanks for the suggestions, I'll align my flaps (ooh eer) in Basic Settings tomorrow and maybe have a look at the output tests, then if that doesn't resolve it, I'll have the glovebox off at the weekend and see what's going on... My friend owns a B7 so I'll see if I can take that apart and compare the 2 in operation to see if mine's not doing something it should!

 

[benjie]

Aligned the flaps via Basic Settings and gone through the output tests (all appeared normal) and it's still happening. Coding is all correct.

I did notice that today, if I pressed the middle vents only button, the central vent eventually (after 2-3min) got cold. Then when I pressed AUTO, it stayed cold. So I'm thinking the central vent motor is on its way out?

 

[kite]

You Could have a flap arm come loose.
I would remove the glovebox and check the arms and their movement