After a couple weeks, a service tech has said it's definitely the thing they put on the Norcold refrigerator a couple years ago when they had that recall. He said all he gets done is replacing these and that Norcold gives them such a hard time about replacing them. On top of that, he said Norcold doesn't want to pay hardly anything when they are replaced! If there is such a problem with these things, why can't something be done to Norcold? The service tech said Dometic uses a much simpler deal to prevent overheating.