Hi my name isXXXXX have been an appliance repair tech for over 21 years on major appliances.Sounds like the thermistor on this RV type model refrigerator has failed or the main control itself. Would require a tech with an ohm/volt meter to check the resistance on the thermistor. I would recommend to Customer support:http://dometic.com/enus/Americas/USA/Customer-Support/Here is the spare parts list:http://dometic.com/e7a015ae-2585-417d-8f59-4e1c6c8be661.fodocHere is also an RV repair place that could check it :
www.joesautorvtruck.com/561 Lake Havasu Avenue NorthLake Havasu City, AZ
Thank you. I am disappointed if the thermistor is the problem as it has only been functioning 5 months since it was new. I will check it out and see if that is the problem. I will probably need to find a place that is authorized to do warranty work.