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Old 01-16-2015, 10:50 AM   #1
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2014 19' Flying Cloud
Portland , Oregon
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Shower temperature fluctuates

I have a few month old 2014 19' Flying Could and when I take a "Navy" shower (stopping the water flow at the shower head), my water temperature fluctuates greatly. I turn the water on and adjust the temperature, then turn it off at the shower head--when I go to turn it back on (after a minute or two), the water starts off warm and then turns very cold. After about 5 to 10 seconds, it will get very hot and then settle to the "normal" temperature where I had set it.

I've taken it into the dealer a couple of times and they have not been able to fix it. Now, I just got a call with the "everything is working as designed" message. This can't be right; can it??? I've never had this happen on any other rv or trailer I've owned or been in.

Thank you for your help.


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Old 01-16-2015, 11:00 AM   #2
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2014 27' FB Eddie Bauer
Lake Placid , Florida
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We have a 2014 Eddie Bauer and ours does the same thing. I almost hate taking a Navy shower for that reason!

Laura & Tom

Let the good times roll!! Laura
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Old 01-16-2015, 11:56 AM   #3
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2007 30' Classic
Oswego , Illinois
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I wonder if the addition of the mixing valve on the water heater is a good idea....except for the scalding potential. Mine doesn't have it and I have never experienced either slow running hot water nor the temp fluctuation.

However, there are two examples of situations that are normal. If you do not have a quick shutoff on the shower hose line...and shut off the water during your shower with the main faucet, you pass from warm through cold to off. then the reverse...cold to warm when you turn it on. This causes a section of line to have a "bubble" of cold water in it and you will get a little shock. It's also kind of hard to get the main faucet in exactly the same spot as you previously adjusted. For this I'd recommend a hose shutoff like this:

Newport Brass 216 Shower Volume Control - Home By Decor

Shop for your color and price.

The second situation is normal also, but less of a "shock". When navy showering, when the water is off, the line from the heater to the shower cools off. In my unit, the line runs under the floor across the trailer. If it's cold under there, I get a shot of cool, but not cold water when I turn it back on. That one isn't even a concern for me, but the hand held hose shutoff is a BIG improvement.

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Old 01-16-2015, 12:13 PM   #4
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1995 30' Excella
Bowie , Maryland
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Our trailer has done that a few times, but yours sounds much more constant. I've never been able to figure out why it does it sometimes and not others, but I do know it only does it when we're using the pump.

My guess is that the changing water pressure (as the pump cycles on and off) means that the shower gets more hot water sometimes. I know it SHOULD be even pressure in both hot and cold systems, but maybe something in how the camper is plumbed (a couple extra elbows for the water heater, for example) means the cold side can build up a bit more pressure...
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Old 01-16-2015, 12:31 PM   #5
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2006 23' Safari SE
Biloxi , Mississippi
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My previous shower head would do the same. I now use a Oxygenics with the trickle button and no longer have that inconvience.

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 01-16-2015, 01:28 PM   #6
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2014 19' Flying Cloud
Portland , Oregon
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Thanks everybody. I am using the shut off on the shower head and not the main faucet. It is definitely every time I take a shower. I can't believe that the water is cooling off in the line--simply not off long enough--plus it is COLD, not cool. It really is disappointing considering I have never experienced this in other rv's before...
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Old 01-16-2015, 01:35 PM   #7
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2014 27' FB Eddie Bauer
Chelsea , Michigan
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If your problem is "normal" per your dealer, then we have an abnormal 2014 Eddie Bauer. In our unit, the water maintains its temperature very well, even when shutting off briefly for the Navy Shower thing. I suspect you have a bad mixing valve in your unit. Ask them to change it for you or do it yourself.
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Old 01-16-2015, 01:45 PM   #8
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2014 20' Flying Cloud
Kooskia , Idaho
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My 2014 FC 20' behaves exactly the same way. I think it has something to do with the hot water mixing valve at the water heater which is supposed to keep the temperature of the water cooled down to a safe level while allowing the water heater to run at a high temp. When that is combined with the considerably different lengths of pipe to the shower in the cold side vs. the hot side the temp of the water simply varies too much. I am not sure that there is a universal solution to the problem as each model of trailer has a different pipe layout and length.

I am not happy with mine, but live with it.
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Old 01-16-2015, 01:49 PM   #9
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2012 25' FB Eddie Bauer
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Virginia Beach , Virginia
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Stupid button! Naw... haste makes waste!

Curse internet shopping. When I added the Oxygenics head onto #2 (Safari) in 2006 it had a collar to regulate flow from bare trickle up to full force. When I put one in #3 (EB) it came with the pop on/pop off button which I liked a lot less. The other model is still around but most internet text is too limited to tell you the differences between model numbers.

Horror story. I had to run into work on an emergency and jumped out of the shower leaving a mess... and leaving the shower head lying in my "bucket of shampoo, etc". I didn't notice it was on trickle instead of turned OFF. Came back 9 hours later. I'd drained the black tank just before getting the call... I took a 2 minute shower and ran... and didn't change the valves back so the black was open and the gray was shut.... and when I got back the gray tank had filled and the shower had filled...
and when I went in the jiggling caused a slop of water to go into the hallway!

I like to wrap up in a big bath sheet when I get out of the shower - man those things will catch a ton of water in an emergency. I immediately realized what had happened and ran for the gray tank valve. A few more minutes woulda been major flood!

Now, I always hang the shower head up, no matter how much of a hurry I'm in. The button works, but boy make sure it's OFF before departing. When I do boondock it bothers me that it takes over a gallon of water to go through the shower head to get warm water. I have occasionally filled a pot with the cold water, to save to wash dishes, etc.

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Old 01-16-2015, 01:57 PM   #10
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My previous 2012 19 flying cloud would be a bit cooler when using the shut off on the shower head when taking a navy shower ,but not cold and then when turned back on not burning hot , although we only used the shower maybe 5 times and when I cycled the on off on the shower head it was not more then 1 minute and this was when outside temperature was around 75 f hope this helps .

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Old 01-16-2015, 02:19 PM   #11
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Is the shower valve one those that you can set the maximum temperature when turned all the way to hot to prevent scalding? Maybe you need to adjust it so when the valve is all the way to the end of the hot zone it is comfortably warm.

Mine is like that and I don't experience fluctuations to cold. I have to turn my faucet all the way off since I don't have a shower head with a on/off valve when taking a navy shower. When turning it back on I move the handle quickly to its stop on the hot side.

I only leave it off for less than a minute typically.

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Old 01-16-2015, 02:22 PM   #12
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2012 25' FB Eddie Bauer
SLC , Utah
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Mine does it as well. Drives my wife nuts. Would love to hear a solution
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Old 01-16-2015, 03:08 PM   #13
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Oswego , Illinois
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Let me ask a question. Someone on here stated in another thread that the newer water heaters (with a mixing valve) heat to a higher temp than the old ones. Is that true? If so, is the temp adjustable?

My understanding of others' opinions is that the theory is that, with a mixing valve and higher water temp, one can use more water volume without running out of hot water.

If they are adjustable, I'd turn it down and eliminate the mixing valve. They are an occasional problem....and inevitable, IMO.

I can get a bit over two showers with the old non-mixing valve, 6 gallon units before the water gets luke warm.

If there are just two of you, or back to back multiple showers are not needed, why have it?

"If the women don't find you handsome, they should at least find you handy." - Red Green
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Old 01-16-2015, 03:26 PM   #14
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Monroe , Iowa
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Hmmm... interesting. My Southwind MH did that from the day it was new. I turned the head so it did not spray on me while I waited for the warm water to come back.

My '02 Classic does not do it. I was pleasantly surprised, thinking how great Airstream quality is.

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