12v next door sliding door not working

[Calimark]

Hi, after a week away in Cornwall we have found that the 12v socket near the sliding door is no longer working (the one in the cup shaped hole). It probably has something to do with a metal object being pocked into the socket when trying to retrieve a broken 12v plug. I therefore think it is a blown fuse so does anyone know which fuse number I need to look at for this particular 12v socket (the manual was not clear) ?

Thanks.