Hi. First, a thank you to "alturasbal" and "carlos quiroga" who helped me by offering me a solution to the problem.
I tell you how I solved it so that another who may have the same problem helps:
The problem was the spring of the blocapuerta. He left his position due to use or time. Then I will attach a photo so you can see it better. Therefore, it did not work even when the system had cooled. When I managed to get it out, I totally changed the block door I bought in the spare house.
By not opening the card or the card, as I had said before, first, we unplug the electrical part. lugo uncover the top with a flat screwdriver very carefully, push the latch of the lock with the same screwdriver and manage to open the door. Once we achieve this, we unscrew and get the piece out.
I leave the video that helped me and a picture where I point with the screwdriver, the spring that went out of its normal location. As a precaution, we buy another spare and change it.
https://www.youtube.com/watch?v=YwZtvi3_nyQ