Forum Discussion
dougrainer
Jan 04, 2019Nomad
OK, I had to think about this especially after Chris and Biscuit responses. I know of NO control on Norcold or Dometic that will shut down the complete refer, causing lights to go OFF regardless of LOW Ambient temp. The LAT is for cold weather operation to "fool" the evap Thermister to run correctly to cool the Interior. 60 watt light bulb at the rear is to heat the cooling coils in sub 20 degree ambient temps. BUT, regardless of these add ons, the cold weather will NOT shut the refer OFF with the display controls dead. Chris mentioned the OVERHEAT sensor. That is located on the flue. I guess it is possible for it to malfunction in cold weather. But, that is easy to check. You just bypass it OR take a 12 volt reading when the refer shuts down below 40 degrees. If no 12 volts on both sides when it shuts down, that is your culprit. IF you have 12 volts to the Main control, then I would suspect the control board. When it shuts the refer down heat it with a hair dryer. IF the refer comes back ON, your control board is the problem. Doug
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