freezing air from one of the fans / ducts
 

Hi!

Yesterday my girlfriend nagged about cold feat.
I didn't notice anything so I thought nothing was wrong.

Had some spare time today so checked it. And she was right. One of the fans blows cold air, and when I say cold I'm talking FREEZING...
Drove around for a while and waited till the engine was completely warmed up. Still cold air.
All the other air blowing out of the system is nice and warm, just that one spot.

In the attached photo you can see where the cold air comes from.

Attachment 28017

Anybody any idea what it could be?
During the summertim it's not a problem and therefore I didn't notice it I guess.
But when it's freezing out...

Thanks for your reactions!