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Old 07-11-2016, 08:51 AM   #1
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Dometic Refrigerator

I have a Dometic Autodefrost refrigerator in my 2007 Monaco Dynasty. When the outside temperature is over 80 degrees the fridge temp will climb into the mid 50's - 60 degrees which of course is unacceptable. The freezer climbs up about 10 degrees. Has anyone experienced the same issues and if so what was the remedy to fix it?

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Old 07-11-2016, 08:58 AM   #2
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I'm guessing this is the NDA 1402? Are you seeing this on gas or electric or both? Is the sun facing the outside of the fridge compartment?

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Old 07-11-2016, 09:14 AM   #3
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I would try the dollar bill in the seal test first. That is the quickest and cheapest fix. If the seals are good, I would next go to the high humidity switch. Make sure it is off. Last I would go with the cooling fans in behind the refrigerator.
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Old 07-11-2016, 03:44 PM   #4
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I have an absorption type fridge and have replaced the cooling unit after 6 years. We are full timers. We too noticed the temperature increase when the sun was on the refrigerator side of the coach and finally last fall it failed completely. The cooling coils were very hot on the lower part of the cooling system and the ice maker shut down because the ice box was not cold enough.

Fix was not cheap and should not be attempted by a do-it-yourselfer.
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Old 07-11-2016, 09:36 PM   #5
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If tech's can't fix the problem, just replace the unit with a 12c compressor fridge from Vitrifrigo or Nova Kool, which is what I did 😜👍🏻

1996 Country Coach Intrigue 😜
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Old 07-11-2016, 09:55 PM   #6
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RV fridges will virtually shut down when temps, at the cooling coils on the back of the fridge, get near 100.

Many posts on adding vent vans to increase air flow up the back of the unit, and replacing the thermostat/sensor with an adjustable unit. I'll see if I can post a link, or two.

EDIT: Here's some info.


Adding Fans to back of fridge
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Old 07-12-2016, 01:36 AM   #7
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If the refer is in a slide it has side vents and probably two fans toward the top. If one or both go bad it will not cool properly. You also need to make sure the drain tubes are not cracked and letting warm air in.

I added two more fans to my refer since we live in scorching weather. I get 0 to -1 in the freezer and 33 in the refer with the refer facing the sun. Outside temps are 90 right now.

If your refer is in a slide you should be able to hear the fans. There is also a small snap thermistor (temperature sensitive switch) that controls the fan. They are 12 volt so safe to mess with but don't stick your finger into a moving one.

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