I just discovered the light in the fridge was burnt out, nothing odd about that I had thought. So I got another bulb and put it in only to discover when testing it the light would shut off. I took the switch out, tested it with my meter and it seemed to open and close the circuit ok. I then hooked it up again and thought maybe the arm on the switch wasn't closing far enough when the door closed so I modified that, it didn't work either. So out came the switch and I hooked up the power to it and discovered when powered it wouldn't shut off when pushing on the arm. Well after wasting enough time on that I ordered a new one online. I am telling you this tale as you should test your fridge light switch from time to time. I suspect my light was on for a couple of weeks.