Retrofitted climatronic unit problem

[78leon14]

Hello everyone, i have a Leon 1p pre-facelift and i retrofitted the fase2 climatronic unit, when i installed using this tutorial

Now when i use climatronic it starts ok, i did the reset (ac button and front vent) and everything works at least it seams. Now when i puto the front vent only it runs ok for like 5 seconds the the vents seem to move again and it blows almost 0. What can i do? Please thanks