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12-17-2023, 04:26 PM
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#1
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Junior Member
Join Date: Nov 2023
Location: Corinth
Posts: 17
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Dometic refrigerator
Domestic refrigerator model DM2852LBFX will come on but shuts off after 5-10 mins. I can reset the button on the thermo fuse and it will come on but after 5-10 mins shuts off again. Any ideas?
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12-17-2023, 04:38 PM
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#2
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,357
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I assume you’re talking about the thermo fuse on the chimney? Are you on AC or LP?
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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12-17-2023, 04:42 PM
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#3
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Junior Member
Join Date: Nov 2023
Location: Corinth
Posts: 17
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Yes that’s it. It does the samething when it’s on lp. Comes on for 5-10 mins then shuts off
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12-17-2023, 04:46 PM
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#4
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,357
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That thermofuse will trip based on heat. It may be faulty, here is the service manual:
https://www.manualslib.com/products/...2-2821469.html
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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12-18-2023, 12:28 PM
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#5
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Junior Member
Join Date: Nov 2023
Location: Corinth
Posts: 17
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After replacing the thermo fuse with new one it stays on for about 20mins then shuts off.
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12-18-2023, 01:03 PM
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#6
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Junior Member
Join Date: Nov 2023
Location: Corinth
Posts: 17
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It seems like it will stay on till the chimney gets to hot it cuts off
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12-18-2023, 03:22 PM
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#7
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,357
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Can you use a laser temp gun and measure how hot the chimney is at the thermal fuse.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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12-18-2023, 04:07 PM
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#8
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Junior Member
Join Date: Nov 2023
Location: Corinth
Posts: 17
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I don’t have one.
The sensor on top of the rear coils that two wires are connected to that runs to the fan I just replaced it waiting now to see what happens.
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12-18-2023, 04:21 PM
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#9
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Junior Member
Join Date: Nov 2023
Location: Corinth
Posts: 17
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Stayed on for 23 mins then shut off
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12-18-2023, 04:25 PM
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#10
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,357
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Quote:
Originally Posted by Delta02
I don’t have one.
The sensor on top of the rear coils that two wires are connected to that runs to the fan I just replaced it waiting now to see what happens.
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That is simply for the fans, doesn’t control the chimney. I wonder if you might have a blockage in the chimney, or the vent.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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12-18-2023, 04:41 PM
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#11
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Junior Member
Join Date: Nov 2023
Location: Corinth
Posts: 17
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I’ll ck the chimney. What vent are you talking about where would it be located? Thank you for helping me!
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12-18-2023, 05:47 PM
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#12
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,357
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If your refer is in a slide, you don’t have a vent on the roof. If it is in a slide, then take the top access panel off and look.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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12-19-2023, 04:39 AM
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#13
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Senior Member
Join Date: Nov 2018
Location: Norwood, CO
Posts: 685
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Quote:
Originally Posted by chuckster57
That is simply for the fans, doesn’t control the chimney. I wonder if you might have a blockage in the chimney, or the vent.
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That was my thought too.
Chimney can get carboned up. 
Have you managed to fix it?
__________________
German Shepherd Guy 
2018 Keystone 26RBPR
2014 Suburban 2500, 6L with 3.73 rear
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12-19-2023, 01:34 PM
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#14
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Junior Member
Join Date: Nov 2023
Location: Corinth
Posts: 17
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I blew the chimney out it seems to be all clear. I turned it back and does the same thing after about 20 mins shuts off. The lower part of the chimney is hot that you can’t touch it(from element down) the upper part is just warm I can touch it with no problem.
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12-19-2023, 01:50 PM
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#15
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Senior Member
Join Date: Mar 2014
Location: Mountain Home, Idaho
Posts: 3,015
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You state you blew out the flue stack - if you didnt take the time to remove the stack and clean it then blowing it out probably did not do much for removing build up inside the flue
Also you stated you replaced the thermo fuse.. did the one you replace it with match the specs on the existing one removed?
If not the tolerance on the new one may not be correct.,
If cleaning out the flue stack ( be removing and brushing out ) and verifying the correct temp range thermo fuse is installed in the stack doesnt fix the issue then most likley the cooling unit has a blockage and is failing
IMO
__________________
2007 GMC Classic club cab 4x4 Duramax LBZ
2014 Alpine 3010 RE. 34 foot fifth wheel
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12-19-2023, 02:21 PM
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#16
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Junior Member
Join Date: Nov 2023
Location: Corinth
Posts: 17
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I understand now about blowing it out. I’ll take it apart and clean it. The thermo fuse was correct specs. Also it’s doing the same thing before i changed just stays on longer before shutting off 🤷🏼*♂️
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12-19-2023, 06:57 PM
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#17
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Junior Member
Join Date: Nov 2023
Location: Corinth
Posts: 17
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I pulled the refrigerator out so I could clean the chimney put it all back together and still same thing
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12-19-2023, 07:04 PM
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#18
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,357
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Have you used a temp gun to see just how hot the chimney is when it trips?
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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12-19-2023, 07:19 PM
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#19
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Junior Member
Join Date: Nov 2023
Location: Corinth
Posts: 17
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No but I’ll pick one up in the morning and check it
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12-20-2023, 05:45 AM
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#20
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Senior Member
Join Date: Mar 2014
Location: Mountain Home, Idaho
Posts: 3,015
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A good read on the thermo fuse on your 2852 and if your temp on the flue stack is higher then listed in the chart within the link then as I stated before... the cooling unit is bad.,.
This is provided you have verified the vents are clear, cooling fans are working, therm fuse is correct PN, and flue stack is clean.. ( there was NO Need to pull the fridge to clean the baffle inside the flue stack )
https://www.arprv.com/dometic-thermo...prevent%20fire.
__________________
2007 GMC Classic club cab 4x4 Duramax LBZ
2014 Alpine 3010 RE. 34 foot fifth wheel
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