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01-15-2011, 12:35 AM
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#1
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Montana Fan
Join Date: Apr 2009
Location: Albany
Posts: 287
M.O.C. #9222
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Water freezing
We are in Montana where it has been below 0 and we have a problem, our water is on when you have it to the cold water side but when you turn it to the hot water side nothing. Anyone have any ideas on what this could be?
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01-15-2011, 01:14 AM
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#2
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Montana Master
Join Date: Dec 2007
Location: Kansas City, Missouri
Posts: 2,707
M.O.C. #7992
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Mark, I have not experienced the condition but many have wrote on this forum about the check valve going bad on the water heater. Oz even provided pictures showing the repair of the beast. Perhaps a search might get you to his tutorial. Only other thought is your hot water line froze somewhere under the Monty. If the problem is at both sinks I think I would eliminate the check valve issue first. Jim
__________________
2006 3000RK
2009 Ram 2500
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01-15-2011, 01:42 AM
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#3
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Montana Master
Join Date: Sep 2006
Location: Casa Grande
Posts: 5,369
M.O.C. #6333
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Other than something freezing, my vote is the check valve. Can be hard to find a new one, but easy to replace. Brass valve on the outflow side of the hot water heater.
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01-15-2011, 02:18 AM
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#4
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Montana Fan
Join Date: Apr 2009
Location: Albany
Posts: 287
M.O.C. #9222
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Thanks for the imput....I was wondering if that might be the culprit....Thanks again
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01-15-2011, 03:19 PM
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#5
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Montana Master
Join Date: Nov 2005
Location: Paola
Posts: 5,739
M.O.C. #4961
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We have also gone through some cold weather with no problem and I would also bet on the check valve.
__________________
Dennis & Linda Ward
Paola, Kansas
Montana 3735MK Legacy Edition
1200 watts of Solar
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01-16-2011, 12:23 AM
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#6
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Montana Master
Join Date: Jul 2006
Location: K.C.
Posts: 11,731
M.O.C. #5980
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01-16-2011, 01:44 AM
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#7
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Montana Master
Join Date: Aug 2008
Location: New Bern
Posts: 4,370
M.O.C. #8728
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Where can I get a check valve and what do I ask for? I think I'd like to have a spare and save the hassle of looking for one in an emergency.
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01-16-2011, 02:12 AM
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#8
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Montana Master
Join Date: Jul 2006
Location: K.C.
Posts: 11,731
M.O.C. #5980
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Quote:
quote:Originally posted by NCFischers
Where can I get a check valve and what do I ask for? I think I'd like to have a spare and save the hassle of looking for one in an emergency.
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Here is a link: http://www.thefind.com/garden/info-rv-check-valve
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01-16-2011, 12:56 PM
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#9
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Montana Master
Join Date: Jul 2009
Location: Olympia
Posts: 1,058
M.O.C. #9441
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I had the same problem a month ago when temp dropped to around 9*. My water froze between the sink and the water heater as I had cold at both sinks but no hot at ether. After it thawed out I looked under the belly for open spots that would allow cold air in that could be the cause of the freezing. The only thing I saw was the 2 drain lines for draining down the line for storage. I think that was the cause of mine freezing so I covered them and the hole in the belly with foam. It has been down to the teens a few times since they but have not had any problems.
__________________
2020 Ram 3500, 2022 Luxe 38GFB,2500w Solar with Victron equipment, Gen Y Pinbox
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01-16-2011, 01:24 PM
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#10
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Montana Master
Join Date: Sep 2006
Location: Casa Grande
Posts: 5,369
M.O.C. #6333
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Quote:
quote:Originally posted by NCFischers
Where can I get a check valve and what do I ask for? I think I'd like to have a spare and save the hassle of looking for one in an emergency.
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"Hot Water Backflow Preventer", I picked up two at a mom and pop RV parts dealer. CW did not have them, nor Lowes or Home Depot. I would suggest getting a spare......
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02-09-2011, 05:44 AM
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#11
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Established Member
Join Date: Apr 2010
Location: Lees Summit
Posts: 45
M.O.C. #10295
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How can you tell if the check valve is defective? If defective, I'd assume the water heater needs to be drained before replacing? How is that done; through the hot line drain in the convenience center?
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02-12-2011, 07:59 AM
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#12
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Montana Master
Join Date: Nov 2002
Location: Oceanside
Posts: 20,028
M.O.C. #20
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Jerry and Lisa, you get no water flow from the water heater. One way to test it is to turn the valve(s) to bypass the water heater. If you get flow now, then it's the water heater, probably the check valve. That flow will be cold water, by the way.
We've had the valve go bad twice, in two different rigs. They're available at most any rv dealer. However, there are two sizes. So either take the old valve with you or plan on buying one of each size. The first we bought cost me $5. A couple of years later we bought one from an RV Dealer connected to a Camping World. He hit me for about $12. We now carry a spare since they always seem to go bad at the most inopportune time.
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