Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 02-17-2012, 04:47 PM   #1
Junior Member
 
Join Date: Mar 2008
Location: Northern Virginia
Posts: 10
Plumbing Hot Water System Problems

I have a Winnebago Adventurer 38N that will not produce hot water when the hot water distrabution valve is in the normal position, however hot water will flow as norma except ther isa rattle/knock when a faucer is abrubtly opened. Any one have a suggestion?
__________________

__________________
CardinalNVA is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 02-17-2012, 08:04 PM   #2
Registered User


 
Monaco Owners Club
Join Date: May 2009
Posts: 3,198
My first guess is that the valves are open iin the outside shower (or possibly the inside shower) but the valve on the outlet is closed.
This allows the hot and cold to flow in a circle in the pipes, and typically u get a quick blast of hot followed by all cold.
__________________

__________________
JimM68 is offline   Reply With Quote
Old 02-19-2012, 06:51 PM   #3
Junior Member
 
Join Date: Mar 2008
Location: Northern Virginia
Posts: 10
Plumbing Problem WIN Adventurer 38N

Jim,
Thanks for your reply. I checked out you suggestion, but that is not the solution. Let me re state the issue. Down by the warer pump is a valve lableed Normal and when turned labled Hot Water Heater Bypass. When that valve is in the normal position water flowes through the plumbing with out any knocking but the water is not heated. When the valve is turned to Hot Water Heater Bypass the water in the plumbing flows and the water is heated. Additionally when the faucet, like the toilet or the valve to inlet water in the washing machine, is opened there is a rumble/rattle in the plumbing that comes from the area of the hot water heater. If a faucet is opened slowly there is no rumble rattle. Does that clarify what I am experiencing?
All Ideas are gratefully accepted.
__________________
CardinalNVA is offline   Reply With Quote
Old 02-20-2012, 08:25 AM   #4
Senior Member
 
trainsktg's Avatar
 
Join Date: Feb 2011
Location: Pacific NW
Posts: 154
It almost sounds like your plumbing is routed differently than your Normal/ Bypass valve is labelled. 'Bypass' should bypass the water heater, 'Normal' should send water to the heater. My house's hot water plumbing knocks too, and I need to fix it. Some of your piping might be loose in its supports, or your water pressure is too high.

Keith
__________________
'99 Bounder 30E with V10 and '06 Wrangler tow (no more dolly )
trainsktg is offline   Reply With Quote
Old 02-20-2012, 08:32 AM   #5
Moderator Emeritus
 
Gary RVRoamer's Avatar


 
Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 18,062
Sounds to me like your valve is mislabeled. Or you are misreading it. Byoass should give you cold water at all taps, while normal should be hot.

There are check valves at the heater inlet and outlet and it is fairly common for them to get noisy if the water has a high mineral content (hard water). The valves get crudded up with mineral scale (and eventually stop working)
__________________
Gary Brinck
Former owner of 2004 American Tradition
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
Gary RVRoamer is online now   Reply With Quote
Old 02-20-2012, 06:33 PM   #6
Junior Member
 
Join Date: Mar 2008
Location: Northern Virginia
Posts: 10
Plumbing Problems

I think you are correct. The only way I will get to the bottem of the issue is to have an RV plumbing technician diagnose the problem and repair what needs to be repaired, Next week I think I will cam[ at Lazy Days ion FL and let the handle it. Thank you all for you insite.
CardinalNVA
__________________
CardinalNVA is offline   Reply With Quote
Old 02-26-2012, 07:56 PM   #7
Senior Member
 
f14av8r's Avatar
 
Winnebago Owners Club
Freightliner Owners Club
Join Date: Jul 2010
Location: Tampa Area (sometimes!)
Posts: 390
I'm 99% sure the problem is with your water heater check valve. There are two of them and they chatter (hum, squeal, rattle) when they start to fail. On my Journey 34Y I was getting a loud whine whenever hot water was being used anywhere in the coach. This was an easy fix. I got the valve at Lazy Days (happened to be in town) and replaced the valve on the hot water side (attached to the heater itself). No more noise. The hardest part was getting to the valve as I had to remove a couple of panels and all the junk in the wardrobe closet.

I suspect you are misreading the label on your bypass valve. The handle of the bypass valve just pulls off and can eaisly be mispositioned. Just put it in the position where you get heated water at the outlets and you are good to go. Putting it in the opposite position will still allow water to flow from the hot water outlets but it won't go through the heater.
__________________
Randy and Tina & pups: Cinnamon, Cookie & Coco
2010 Winnebago Journey 34Y
Freightliner / Cummins 340hp ISB
f14av8r is offline   Reply With Quote
Old 02-27-2012, 11:47 AM   #8
Senior Member
 
Workhorse Chassis Owner
Join Date: Jun 2003
Location: Palisade CO
Posts: 3,561
This a diagram I drew of the way Winnebago plumbs the bypass.
Normally water flows in the direction the diverter valve handle is pointing.

__________________
Clay WA5NMR - Ex Snowbird - 1 year, Ex Full timer for 11 years - 2004 Winnebago Sightseer 35N Workhorse chassis. Honda Accord toad.
Clay L is offline   Reply With Quote
Old 02-28-2012, 02:50 PM   #9
Junior Member
 
Join Date: Mar 2008
Location: Northern Virginia
Posts: 10
Thanks to all of you who gave advice and possible solutions. I found a RV Certified Tech in the RV Park. He came up with the same solution that many of you provided. He got the Hotwater Bypass Valve placed properly and put a spot of silicone on the valve handle so it won't come off and get put back on incorrectly, but will still come off if necessary. He listened to the rumble/Knock in the system and opened up the access pannel to the hoteater heater, drained the heater and made sure the electric heating element was off. Before he drained it he had me run the water again putting his hand on both check valves (accessed through the access pannel to the rear of the heater) and identified the one with the rattle. Luckly he had a new valve on his truck and replaced it, refilled the hotwater heater, had me run the air out of the system and felt both valves before he closed up the rear access pannel and the front access pannel. All done in one half hour. Paid $60.00 cash for the repair. Best deal I have had in a long time.
__________________

__________________
CardinalNVA is offline   Reply With Quote
Reply

Tags
plumbing, water



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Aladdin System spen01ce Monaco Owner's Forum 51 11-19-2013 09:44 PM
454 running too hot? Senior Chief Vintage RV's 76 05-20-2012 05:10 PM
Water leak at filler port-what is the box called? Orville Alpine Coach Owner's Forum 6 02-20-2012 11:19 PM
Salt Water for Fuel - Whatever happend to this idea? Wayne M Just Conversation 12 02-17-2012 11:24 AM
Brake Master System GlenB Toads and Motorhome Related Towing 5 02-17-2012 10:05 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:25 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.