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Topic ClosedMuffin Fans on back of Refrigerator
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Posts: 1108 		Direct Link To This Post Topic: Muffin Fans on back of Refrigerator
    Posted: 11 Sep 2016 at 11:06pm
Usually good cooling with absorption refrigeration starts with system management.  That is: Let it cool for 24-48 hours before heading out. Use cooler type ice packs to speed up the process. All products during the initial load should be pre-cooled and anything that is cooked on the road should be cooled some before putting it into the fridge. Of course minimize the time open. Some folks have reported success with a circulating fan inside the fridge picked at Camping World. 
Cliff & Raelynn
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Posts: 13 		Direct Link To This Post Posted: 11 Sep 2016 at 6:52pm
What would be the other issues? 

Can I just add another fan to the same temp switch that is already there? If so, where should I locate it? The one that is there now is on the lower left of the fridge compartment.
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Posts: 1108 		Direct Link To This Post Posted: 11 Sep 2016 at 6:17am
Originally posted by Bcmckean

I had it in propane mode for most of the time... Tried on shore power as well with no difference.

Will try to test fan with 12v power tomorrow and see how it goes.

Thanks!

Operating in the mid 50's on either mode tells me you have other issues. I doubt very much a singe muffin fan, even running full time, will drop your fridge temp into the high 30s. 
Cliff & Raelynn
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Posts: 13 		Direct Link To This Post Posted: 11 Sep 2016 at 1:38am
I had it in propane mode for most of the time... Tried on shore power as well with no difference.

Will try to test fan with 12v power tomorrow and see how it goes.

Thanks!
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Posts: 1108 		Direct Link To This Post Posted: 10 Sep 2016 at 9:51pm
You don't say in what mode you were operating the fridge with. 

You can test the fan by disconnecting the leads and applying 12v to it. 

Testing the switch is a little more difficult, but it goes something like this. 


I have not verified this, but the normally open thermo-switch for the fan should close at 90 degrees F.
Cliff & Raelynn
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Posts: 13 		Direct Link To This Post Posted: 10 Sep 2016 at 4:08pm
 I think I have a problem with my fan. I have a 2016 182G and it only has one fan. Camping last weekend I could only get the fridge into the mid to high 50s. I tried jumping as discussed above to see if the fan is working but I get nothing. Is there another way to test the fan? Also when should I expect the fan to come on? I.e. At what outside temp, etc

Thanks!
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Posts: 9062 		Direct Link To This Post Posted: 15 Aug 2016 at 10:06pm
Nice work.
Doug ~ '10 171 (2009-2015) ~ 2008 Salem ~ Pod instruction manual
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Posts: 24 		Direct Link To This Post Posted: 14 Aug 2016 at 8:54pm
I didn't know theire was a fan until I saw posts about cooling the frig.  Mine never came on in two summers of camping.  I found the switch and jumped the wires together and the fan worked.  I think the switch is set to high to work where it was.  I got a snap disc switch on at 130 and off at 115 degrees.  
My issue was that where the factory placement was doesn't get hot enough.  I wanted to put it at the far right but could  not figure how to attach it to the cooling fin.  I ended up going to Harbor Freight and got the smallest C clamp they had.  I cut and ground it down and used it to hold the snap disc.  The first placement was too hot so just moving it up 1/4" seems to be the sweet spot so it doesn't run all the time.
The clamp made it easy to adjust.

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Posts: 3346 		Direct Link To This Post Posted: 13 Aug 2016 at 10:14pm
So I would be a fool to complain that it is currently 71 outside in Northern Michigan with a low tonight of 62.  Thanks for the part #.  I may have to order a replacement if I find that this won't work the next time it gets warm/hot out.
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Posts: 364 		Direct Link To This Post Posted: 13 Aug 2016 at 10:08pm
I made an update to my original post and pictures that I reference. I though the F70-10C marking on the thermo switch meant 70 degree Fahrenheit. I have found out it is 70 centigrade so that makes it 158F. Some other people on the internet have said the Dometic Refrigerator Thermodisc with Fan Clip #2412906204 is rated to turn on at 150F. Right now at my house it's 100F and I turned on the refrigerator and you can hear the fan turn on intermittently.
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