My refrigerator started beeping at two o'clock yesterday morning. Best guess is it was some type of problem with the door sensor. And it would not stop. Strange thing was, after I got back from physical therapy it had stopped beeping. Listening to that thing beep whilst I am trying to sleep, well it's kind of like the Chinese water torture. You lay there wondering when it will beep again. It's an old refrigerator. It may be time to check out all the appliance sales they're having this weekend.