We have an extractor fan type thing (the type you normally get in the bathroom, not a cooker hood) on the outer wall of our kitchen that doesn't seem to have a plug anywhere so much be wired behind the wall.
It goes off literally all the time every couple of hours for half an hour, even if Im just sat in the lounge not doing anything in the kitchen it'll just come on when it feels like it.
Its really loud and annoying, how can I:
A) turn it off for good
B) stop it coming on all the time
C) kill it