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Old 10-26-2007, 10:09 PM   #1
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1966 30' Sovereign
Goleta , California
Join Date: Aug 2007
Posts: 32
Guide to troubleshoot your fridge problem

I came across a great guide to test what is wrong with your fridge. The URL is

This guides teaches you how to test if you need a new heating or cooling unit. I discovered that both of my fridges had blockage, one of each kind. This requires a new cooling unit. After checking the price ($450) I decided to buy a new fridge.


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Old 12-31-2007, 08:51 AM   #2
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1977 Argosy 24
Los Angeles , California
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Thank you Cristina1966, great link to the fridge guide.

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Old 07-03-2017, 08:17 PM   #3
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2009 27' FB Classic
Cincinnnati , Ohio
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I tried the link but got no where.
Ours has not been switching over from propane to electric and the freezer is getting cold, but the actual refrigerator, not much or hardly at all.
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Old 07-03-2017, 08:35 PM   #4
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Biloxi , Mississippi
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Very old post. Link is no longer valid.

Found this using Google.

Very detailed,

Do you know what a learning experience is? A learning experience is one of those things that says "You know that thing that you just did? Don't do that."
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Old 07-03-2017, 08:52 PM   #5
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Nota bene page 24 of that newer Diagnostic Service Manual where it says, "A refer (sic) that chases the out-side (sic) temperature is improperly vented or has a weak cooling unit."

We spent a lot of time following that troubleshooting guidance a few days ago only to conclude that our cooling unit is now simply "weak".

Our present Dometic is only 20 months old and it worked fabulously when we first got it as a replacement for the original unit which was also "weak". An Air Forums long-timer who also ran through two Dometics told us about the theory of escaping hydrogen. Hydrogen is the smallest molecule in the universe and it diffuses out of the welds preferentially, leaving an inadequate mixture of substances behind, inside the cooling unit. Hence the performance degradation.

We said to heck with Dometic - wasting our money on two of them is enough - and we bought a Vitrifrigo, but we have the battery capacity to handle that kind of replacement (not everyone does).
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