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Old 06-30-2014, 10:25 AM   #1
2 Rivet Member
2012 25' FB Flying Cloud
Georgetown , Texas
Join Date: May 2011
Posts: 80
Very low water pressure for hot water from pump

Hi All,

Just got our 2012 out of storage, and while sanitizing the fresh water system, I noticed that there is very little pressure on the hot side of the faucet.

When the faucet is full-on cold, the pump revs up and there is decent pressure. When it is full-on hot, the pump runs, but it revving very low. This is most noticable at the kitchen faucet, but happens on all of them.

When hooked to city water, there was a difference between full-on hot and cold, but it was not as pronounced.

My guess is there is some blockage in the hot water line someplace.

Any suggestions on diagnosing and fixing myself? Or do I need to take it in?

We are using it this weekend (don't need the pump) and then again in 2 weeks (definitely DO need the pump).

Thanks in advance!

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Old 06-30-2014, 10:41 AM   #2
Rivet Master
1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
Join Date: Jul 2009
Posts: 3,030
From what I understand, the new water heaters that AS install have some kind of a temperature limiting valve located near the top outlet of the heater. I know there is an unfamiliar device there on my 2014 I have never seen before on my older trailers.

The limited information I have read about it is that it clogs up and is to be removed for cleaning fairly frequently, but the posts on the subject seem to say that it is very difficult to remove and clean or service. One of those "do this service, but we didn't give you space or an easy way to do it" jobs.

Now, I may be all wet (so to speak) on this and can't refer you to the threads which mentioned the problem, but your limited flow on the hot water side only issue seems to fit the things I have seen in some other posts. I am not looking forward to the problem solution when my 2014 comes up with it.

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Old 06-30-2014, 11:09 AM   #3
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Naples, FL , Hood River, OR
Join Date: Dec 2005
Posts: 4,794
See if you have an Atwood 'XT' model water heater. PM me if you do.

Lew Farber
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Master Tech Energy Systems, Inc.
AM Solar Certified Installation Center
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Lew Farber-RVIA Certified Master Tech.... MASTER TECH ENERGY SYSTEMS, INC.
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