I've found my cat in the dryer. It's warm there:)
It's probably just being a kitten. If you think it might presist and you're really worried, or if it's a real annoyance. I'd try shutting him in there on purpose and time it for awhile. Maybe it would teach him it's not a place he likes being, then you wouldn't have to worry about it happening on accident. But I'd think you'd notice a cat in there:)
Becky
It's just giving me a phobia that I wouldn't hear him in there. I don't know if he's strong enough to push the door.
I'm taking offensive action now (after snapping the pictures of course) when he comes near the fridge ;~D
I found a kitten in my dryer once, all warm and fluffy:'((( Do all you can to make it a very bad place for him to want to go to.