My door has several problems. Sometimes it won't open or close unless you unplug it and then plug it back in. Other times it will open or close and then stop after moving a few feet. Other times it will open all the way but then it sag back down about half way or so. Other times it will act like it wants to open but will only go a few inches and then come back down. It may work fine for days and then not work right for days and then start working again. I think it is haunted!