All ActivityMost RecentMost LikesSolutionsRe: Dometic Refer Fridge Portion not CoolingDometic 12 cu double door temperature can be resolved by moving the thermistor to a cooler region of your fin coil.Re: Dometic Refer Fridge Portion not CoolingI purchased a new 2019 Grand Design 336RLS. Plugged into house current and the fridge on the coldest setting was all over the place. I call the service department and they had a similar problem Dometic and were puzzled. The service department had me reset to level 3 and instructed me to leave it closed for three hours. It held temp until my wife put our food in for our first trip. Very frustrated! I'll fast forward to my fix. I did an internet search for "What is the function of a thermistor". The importance of an article about moving the thermistor. Doing The Thermistor Shuffle – RV Refrigeration Repair https://rvrefrigeratorrepair.com/uncategorized/the-thermistor-shuffle/ I pulled the thermistor out of its ceiling mount an placed it facing the coil on my top shelf "lower left corner of my fin coil". Perfect 34 degrees at level 4 and holding!