Norcold Fridge constantly running

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• MuttonChops Member Posts: 1,804

  1:48AM

  Disclaimer:  No direct 2-Way Fridge experience.
  
  A yr-2019 TAB 400 most likely has the Norcold NR-740 series Fridge.
  nüCamp installed these to operate on 12VDC only, when on Shore Power the WFCO Power Center not the battery powers the Fridge { that was background info not specific to your issue }.
  
  NR-740 User Manual states when the Thermostat is set to " Off " the Fridge is off.
  Assuming your reference to " Zero " means the Thermostat is at it's lowest setting (off)
  then it seems your Thermostat has failed ( a common failure BTW )
  
  Replacements are available for around $35 on the web.
  Do confirm your Fridge Model Number before ordering.
  
  Until a replacement is installed. . . .
  Your trailer may have a 12VDC Power to Fridge toggle switch,
  turning it off will stop the Fridge operation.
  If not on most rigs the DC Fuse panel position #9 feeds the Fridge remove it to turn-off.
     Check to see if your Power Center has a list of DC Fuse Circuits to confirm Fuse # to remove.
  

  
  

  '18 320 S,  pitched axle, 3020HE; PNW based
  TV: '17 Colorado V6 Z71 4x4, Tow Package, GM Brake Controller
  Adventures:  56   Nights:  379  Towing Miles 47,220
  

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• drackus Member Posts: 5

  4:08PM

  I also have a 2019 Tab 400 with the Norcold fridge.  It was not running consistently.  I installed a new thermostat and it works perfectly now.  

  
  

  I ordered the replacement from the RV Fridge Guys. https://rvfridgeguys.com/
  

  Norcold Thermostat Control Assembly 635832 (NR740/ NR751)

  635832

  
  

  By the way, my 2 way fridge is wired into both the 12v system and the 120v system.  

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