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AprilnJohn's avatar
AprilnJohn
Explorer
Aug 02, 2019

Dometic fridge won’t stay lit

Hoping someone here can help as we’re in the midst of our vacation.
Dometic RM2652 fridge. Pilot lights instantly. Burns for 15 sec or so and shuts off.
I downloaded the manual.
I checked the burn tube (beautifully clean), flue, and orifice.
I’ve gone through the tests and everything seem ok except for the thermocouple.
During pilot it only puts out 19mv. Spec says 25-35mv.
I was able to pick up another thermocouple and it does the exact same thing with almost the same test readings. Maybe up to 20-21mv.
Any suggestions? Can I bypass or fool the thermocouple?
I’m using my generator during generator hours to try and keep things cold but obviously it’s not the best setup.
I appreciate any help.

14 Replies

  • have you removed the burner and cleaned? DO NOT POKE ANYTHING in the orfice hole you,ll ruin it. clean with air soap water. your burner flame should be about a inch long nice and blue.
  • The fridge likely needs a control board. My fridge was new in 2000, about 05 I had the same problem. I installed a Dinasour brand board. The fridge is still working.

    Mark
  • Thanks. It’s in a 2005 Springdale
    I linked a pic of the burner if it works.
    I tried both of my tanks to see if there is any change. No difference.
    I also tried sticking the old thermocouple is the flame of my water heater with my meter on it and got the same results.
    The fridge worked before this trip.
    ***Link Removed***
  • There is NO pilot light. That is the main burner flame. Thermocouplers rarely fail, so, having 2 do the same thing points to a control board problem. NO, there is no SAFE way to bypass the Thermocoupler. It is a SAFETY device. If the burner flame is too low(LP gas pressure slightly low) then the flame will NOT be hot enough to satisfy the Thermocoupler. Doug

    What year is your RV?