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Old 09-17-2018, 01:38 PM   #15
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Put a fan system in your fridge. No more frost.
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Old 09-17-2018, 01:39 PM   #16
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wanainee,
Is your freezer really at 22 def with your added fan or have you maxxed out the temperature that can be read on your freezer thermometer? I would be concerned that a fan on the freezer plate would turn the freezer compartment into another refrigerator compartment, where you have replaced frost accumulation with condensation that drips off instead of accumulating.
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Old 09-17-2018, 03:28 PM   #17
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We just completed four weeks in our 2018 interstate. About one week into our trip we noticed that the fridge upper cooling component was starting to ice up. Needless to say, it didn’t improve over the course of the trip. We were not in warm climate nor did we leave the fridge open for any length of time...
Thoughts?... is this common? Seems to be a bad situation... as excessive iced up on the components cannot be a good thing!!
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Old 09-17-2018, 05:08 PM   #18
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Put a fan system in your fridge. No more frost.
GMFL & wanainee - can your share more details on the fans you have in your refrigerators? In your picture it looks like you both have the same basic refrigerators. I assume they are in AS trailers. It looks like they are in the refrigerator compartment - is that right?

GMFL - yours looks like a purchased item rather than the home made version done by wanainee. Can you share a source? How did you get 12V power to the fans inside the refrigerator?

You are talking to a group of Interstate owners that have some very small refrigerators that don't have much room to add a fan system. The Interstate GT models do have more room, but with separate refrigerators and freezers.

Thanks...
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Old 09-17-2018, 09:12 PM   #19
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I've answered my own questions. First the fans shown in photos posted by GMFL & wanainee are in large LP absorption refrigerator/freezers in Airstream trailers. They have little relevance to the 12V refrigerators in late model Interstates.

This YouTube video shows how to install the Smart RV Products refrigerator fan system.

https://youtu.be/X2XY-cisIXU

Note that these fans are typically tied into the interior refrigerator light found on some larger RV units. It also looks like the Smart RV unit is only designed for LP refrigerators.

https://smartrvproducts.com

Our Interstate 12V units don't have interior light - so powering an internal fan won't be easy. This little battery powered model I found on Amazon might work for an Interstate refrigerator.

https://www.amazon.com/Camco-Refrige.../dp/B0006IX7TW
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Old 09-17-2018, 09:31 PM   #20
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i used three 80mm muffin fans
wired in series, they spin very slowly and make no noise.

just enough wind to move some air

I did not need one in the freezer as well the freezer is very small
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Old 09-17-2018, 09:47 PM   #21
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GMFL - yours looks like a purchased item rather than the home made version done by wanainee. Can you share a source? How did you get 12V power to the fans inside the refrigerator?
Yes mine is in a Dometic 7 cu foot in my 2014 23D. Thanks for the kind words, but I made mine also. Simple 2x3 aluminum extruded tube milled to make an air duct. Two 60mm fans inside pull air into the duct and blows it out the holes in the back of the duct. Blowing the air through the cooling fins in the back of the fridge. A 3 amp breaker two 2x3 plastic end caps and a power switch complete the project. I’ve been using mine for about 3 years now and it helps keep fridge temps low and I never have problems with icing up. 12volt power was obtained by running the 12 volt positive lead out through the drain tube and the ground is attached to one of the cooling fin screws via a eye crimp.
There is a guy now making them and selling them online called “fridge-fix”
https://smartrvproducts.com/
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Old 09-17-2018, 09:52 PM   #22
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12volt power can be obtain by running a wire out through the drain line.
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Old 09-18-2018, 07:13 PM   #23
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Yes mine is in a Dometic 7 cu foot in my 2014 23D. Thanks for the kind words, but I made mine also. Simple 2x3 aluminum extruded tube milled to make an air duct. Two 60mm fans inside pull air into the duct and blows it out the holes in the back of the duct. Blowing the air through the cooling fins in the back of the fridge. A 3 amp breaker two 2x3 plastic end caps and a power switch complete the project. I’ve been using mine for about 3 years now and it helps keep fridge temps low and I never have problems with icing up. 12volt power was obtained by running the 12 volt positive lead out through the drain tube and the ground is attached to one of the cooling fin screws via a eye crimp.
There is a guy now making them and selling them online called “fridge-fix”
https://smartrvproducts.com/
GMFL - if you made that fan yourself then the guy making and selling them copied your design. Nice work.
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Old 09-19-2018, 03:49 PM   #24
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R3100 NovaKool

I had a terrible frost/icing problem that was simply solved but it was a pretty specific issue.

The NovaKool R3100 has a reversible door that is hinged on the left.

There is a bottom bracket with a hinge pin on the right that receives the door when the door swing is reversed.

On mine, the bracket was bent up just enough to interfere with the door gasket sealing. I bent the bracket down and made sure the gasket was sealing when the door closed.

Voila...no more icing.

Something to check when troubleshooting.
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Old 09-19-2018, 06:11 PM   #25
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VAtom - good tip. I noticed same problem on mine just before my last trip. That seal has to close tight to keep frost down.
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Old 09-19-2018, 06:36 PM   #26
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VAtom - good tip. I noticed same problem on mine just before my last trip. That seal has to close tight to keep frost down.
VATOM - What MIKE said. No major icing issues here but won't hurt to check. Thanks for tip!
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