> I have an 84 Wolfsberg Westfalia GL and I am not getting any ventilation
> from the two roof outlets above the sliding door. I slide the lever D in
> the operating controls and nothing happens.
>
> I looked up there above the slider and into the vents and see foam
> blocking the ventilation channel in front of, behind,  and between the
> two ventilation channels.  No surprise why there is no outside air flow.
>
> Is this foam suppose to be there?

My guess is no.  I'll also guess that you usually leave lever D in open
position.  What happens as our van approach that age is the foam
deteriorates, which is why we can't shut off the air flow entirely.  My
foam came up the defroster outlet.  Yours jamed up in the roof vents.

To see if I'm right, look see if the foam is in little pieces or in one
big hunk.

TBill

z***I wonder how much higher sea level would be without sponges.***