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Old 04-30-2017, 03:31 PM   #1
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hot water turns cold

Ok, I read the first post for the water heater. The bypass valve is in the right position. This is the first time we have had an issue after de-winterizing.

So here is what happened.

1. Flushed out water system
2. Turned on the water heater by pass, water filled the tank and then it overflowed out the pressure regulator. It was in the open position.
3. Turned off water and let excess drain out the pressure regulator.
4. Closed pressure regulator.
5. Heated the water.
6. Water ran hot for a minute, then ran cold.
7. Turned the by pass on and off a few times and left in on position.
8. Still getting cold water after a minute.
9. Reset air gap in water heater per instructions in manual. Turned off water system, turn on hot water at kitchen sink, opened pressure relief valve. After ten minutes, the pressure relief valve did not pop shut on it's own, so closed it.
10. Retested system by heating up water and turning on kitchen faucet. Still get cold water after a minute.

Any suggestions?

Thanks.
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Old 04-30-2017, 03:35 PM   #2
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Your by-pass valve is not in proper position (should be close) or it is defective.....or your inside/outside shower valves are open and the shower head shut off button is activated....
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Old 04-30-2017, 03:44 PM   #3
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It sounds like you have the crossover valve open (the valves are going to be open or closed...not off or on)

Please read this thread again:

http://www.forestriverforums.com/for...st-103381.html
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Old 04-30-2017, 04:13 PM   #4
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hmmm we've tried it with the valve both ways (our system only has one valve). The cold water takes over after a moment with bypass valve closed.
(Water fills the tank).


Is the crossover valve the same as the by pass valve? We were only shown the one valve and told to have it parallel with the tubing to fill the tank.

Seems like the only option left is a valve replacement.
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Old 04-30-2017, 04:18 PM   #5
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Before I go that route, I would also verify what fonzie said. Do you have an outside shower?

If so make sure the taps are turned off, and just not at the shower wand head itself.

If you leave the taps on, but the handheld shower wand has it's button pushed off, then when you turn on the taps inside the RV, it's allowing cold water to be pulled in to the hot water lines via the outdoor shower.

Same way with the indoor shower, if you haven't checked to see.
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Old 04-30-2017, 04:34 PM   #6
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We don't have an outside shower. Faucets inside are off and shower head button is in closed position.
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Old 04-30-2017, 04:38 PM   #7
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Most water heaters have either two or three valves for winterizing. Are you sure you have all the valves in the correct position. See below. Is it possible you still have one valve in the wrong position?
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Old 04-30-2017, 04:38 PM   #8
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Quote:
Originally Posted by Wenatchee Willie View Post
shower head button is in closed position.
Are the shower hot/cold taps themselves turned off though. Usually if they aren't then the handheld wand will drip water to show you the taps are still on (even with the handheld wand button closed).... but I don't know if you have made any modifications here, or may have a different type shower.
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Old 04-30-2017, 05:51 PM   #9
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Ok, Thanks to everybody for the help. Discovered two more valves way under the floor. Turned them the right way and it all works now. Guess we were not shown all the valves when we picked up the RV and during our first two years of winterizing, which we have our local RV people do, the valves were turned differently when they returned it to us.

Once again Forest River to the rescue!! It gives me confidence with this forum's back-up we can tackle Alaska in a couple months, since a handyman I am not.

Big thanks again.
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Old 05-02-2017, 11:17 AM   #10
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Quote:
Originally Posted by Wenatchee Willie View Post
Once again Forest River to the rescue!! It gives me confidence with this forum's back-up we can tackle Alaska in a couple months, since a handyman I am not.

Big thanks again.
Since you said you are going to Alaska I take it you are going to tow your camper. Do you have a copy of "The Milepost"? It is a book that is a mile by mile description of the roads beginning at the lower 48 up through Canada and all in AK. It is invaluable for knowledge of where you can buy what. It is also helpful in telling you what you can and cannot bring into Canada (like firearms (NO pistols), and what permits you need to have a CB radio in Canada, Etc.)

It is available in any good bookstore in the Travel Section.

Have fun, I envy you the trip, I lived in "The Great Land" for 10 years.
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Old 05-02-2017, 12:31 PM   #11
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We will be towing our car. We have a class C Coachmen Freelander.

Yes we have the Milepost and have mapped out our main destinations along the way.

Looking forward to our trip.
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