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Old 10-12-2020, 08:44 AM   #1
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Dometic Fridge "Problem"

We have a 3cu ft dometic fridge in our camper and we dont always pack it completely full. this can sometimes lead to our food/drinks freezing if we are not constantly checking the temp. we set it where we think it should be and check the temp with a fridge thermometer, but sometimes we are way off and it over cools. we woke up this weekend to exploded pop all over everything in the fridge.

my thought was to use a thermostatic outlet with remote sensing probe to turn the fridge on and off. see below for item. my question is whether using something like this to maintain temp will damage the fridge by turning it on and off or is that essentially what the control knobs on the front are doing?

https://www.amazon.com/Inkbird-Max-1...NSQZHETFA5FMZ9
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Old 10-17-2020, 07:06 PM   #2
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Which model do you have? I have the Dometic RM2354 3.1 cu ft fridge in my A-frame. There are operating and installation instructions on the Dometic web site. The 2354 has a cooling scale of 1-5 on the operating panel. There is also a sliding temp regulator on the leftmost cooling fin on the inside of the fridge.

I do use a battery-powered wireless thermometer ($10 at Walmart) for a continuous monitor of the fridge temp. I put the temp sensor in the fridge on one of the shelves. The readout goes on the counter when camping and in the tow vehicle when towing.

I have the the sliding temp regulator at the top (coldest position), and the panel set at "5" (coldest position) until the wireless thermometer is consistently below 30. Then I back off the panel setting to "4".

I also use a battery-powered Camco fridge airator fan ($20) to even out temps inside the fridge. The fan does a great job of preventing the wide temp swings I used to get when opening the door.

hope this helps
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Old 10-18-2020, 08:50 AM   #3
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Digital Temp Sensor

I bought this one for our Dometic fridge.

https://www.amazon.com/AcuRite-Refri.../dp/B004QJVU78
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Old 10-19-2020, 07:47 AM   #4
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we have a normal fridge thermometer already but like the idea of the alarm.

I was just trying to figure out if we could suddenly cut the power and then turn it back on as a way to keep the temp where we want it by using a thermostatic outlet or if doing that would hurt the fridge.

good ideas so far!
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Old 10-19-2020, 07:59 AM   #5
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I don't believe you'd hurt it by "cutting power" but I'm not familiar with your particular unit. What are the "default" settings. IE: If you cut the power and restore it what settings come up? Will it even be on? IF it's on, what temp setting will it default to?
Lots of folks get by with the slider on the fin. Where is yours set? Remember, setting the slider to a colder setting does NOT make the fridge cool any faster, it just makes it cool longer and to a lower temp.

Find the place on the fin where it doesn't freeze and leave it there.
My 2
I feel your pain tho.... frozen eggs suck, also frozen lettuce and of course frozen beverages are not great unless in a blender!
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Old 10-19-2020, 10:53 AM   #6
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I have tried adjusting everything, setting the temp based on the thermometer i keep in there. but if our outside temps change 30-40 degrees it tends to freeze stuff overnight while during the day it would be fine.

The outlet I was looking at has a remote probe that I can run into the fridge and can set an on and off temp to keep it right where I want it regardless of what the outside temps are. we never boondock and only use propane when driving.

If I understand how these fridges work correctly, its an electric heating element that is essentially turning on and off to keep the temp where I want it. so using an outlet to turn it on and off shouldn't really bother it at all.
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Old 10-19-2020, 12:35 PM   #7
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I agree. If you wire it into the heater it should work as you want as long as you're on electric operation only.
And you are right- A big temp swing will make mine freeze occasionally but usually it's OK. MY problem is mine won't keep up if the inside trailer temp climbs above 80-85.

Good luck!
Happy Trails!
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Old 10-20-2020, 09:53 AM   #8
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While the fridge in our TT is much larger that 3-cuft, it displayed the same erratic behavior as revealed by our analog refrigerator/freezer thermometer. We tried sliding the thermistor up and down and could never get the temperature to stabilize. This (and a bit of research) led us to suspect that the sliding thermistor may be the culprit.

For $30, I ordered and installed a Dometic Thermistor Repair Kit. After some initial adjustments, the difference was immediately seen: mostly stable 38 fridge temps and 5 freezer temps. There is still a wee bit of variation if the outside temps climb into the 90s or fall into the 40s, but a very small adjustment of the thermistor's dial does the trick.

I can't guarantee that it will solve the problem in a fridge less than half the size of ours, but it may be worth a try.
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