Dometic DM2862 thermal cutoff on flu kicks out whether on gas or 110v. Can this part defective? Just went out to RV and

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Customer: Dometic DM2862 thermal cutoff on flu kicks out whether on gas or 110v. Can this part b defective?
JA: Have you noticed an increase in fuel consumption? And how does the Kicks start—same as usual?
Customer: just went out to RV and fridge was off. Will reset and run for 30 minutes or so and then kicks out.
JA: What year is your Kicks?
Customer: fridge is in 2009 Copper Canyon 5th wheel
JA: Are you fixing your Kicks yourself? What have you tried so far?
Customer: yes, just narrowed down to the over temp sensor.
JA: Anything else you want the Mechanic to know before I connect you?
Customer: I have not noticed any yellow powder on cooling unit and fuses check good.
Answered by Robert in 5 mins 2 years ago
12+ years of experience

37,702 satisfied customers

Specialities include: Auto Body Technician, Heavy Equipment Repairs, Heavy Duty Engine Repairs, Brake and Transmission Repairs

Hi, I'm Robert. Welcome to JustAnswer. I'm reviewing your question now and will post back with your reply momentarily.

Normally you see this issue when a cooling unit is blocked or ruptures, if it ruptured you would smell ammonia or see that yellowish powder on the back of the fridge.

For a blockage you would not get any symptoms at all the box will not cool and when that happens it heats up and causes the thermo fuse to trip.

Make sure the flue is clear and clean if your unit sits in a slide out it should have some fans and you should hear them cycling on and off, if they were not coming on it would be an issue. Fans are an option but when in a slide out they should be installed.

IF the cooling unit is blocked you may want to remove the fridge, flip it end over end and let it stand upright level for about 12 hours, sometimes they will get the ammonia solution going again.

The key here is the fridge runs for 30 mins and then shuts down, possible the thermo-fuse is getting weak and might want to try that before removing the fridge.

We do not sell parts on this site, I would call a local RV shop with the model and serial number to see if they have any on hand.


Thanks! Will try replacing the thermo fuse before proceeding .

Sounds good, if you need more help on this please let me know, I am around daily and respond when I can.
Thanks for coming to Just Answer to ask your question.



No problem at all!


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12+ years of experience

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Last Updated: 12-20-22
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