The refer is actually at the home next door - it is mine but I loaned it to them and I am getting it back to put into my garage as I have replaced it. The lights go on when the door is open and it is cold - no problems there. I just wondered about why that light (little round and green) is on. It isn't being used now - it's empty but plugged in. I can't go get the model number right now, but it's 9 years old, black, orange peel finish, side by side.
The doors have never been ajar. I know this because I check the home which is currently not occupied every few days, and I know that the doors have always been closed, and he only light color that has come on is the little green light next to the DOOR ALARM INDICATOR.