Don't call Velux. I did this and paid a lot for the call-out, only for them to tell me that it was too old and I should replace it. Better to find a handyman, a site such as [wedo.lu](http://wedo.lu) could be a good start.

Thanks, i'll check it out !

When you say by itself,do you mean with a remote?. And what's the issue?.

Yes, I click on a button on a remote to get it to open, but it won't. It has a mechanical system by which it closes and opens by itself.