I have a Norcold in my 07 Meridian, that stopped working. I called the mobile tech. and was told to try this. Remove the Thermister (that's the thing clipped to the cooling fin. It should unplug right at the frig. light. This will cause the light to go out. Turn the frig on and see if it cools. It may take awhile but will not hurt anything. If unit cools the Thermister was bad. You will need the model number and serial number of the norcold to get another one. If unit does not cool you have more problems so call or go to a repair spot.