Question about RTO Atwood Water Heater - 6 Gal LP

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Our atwood heater is firing up ok and running for a good while then turning itself off but we dont get any hot water out of the hot taps. Our water pump is working ok but we have this funny tap within the water system that has 2 positions and were not sure where to set it. We have just bought this and the previous owner cant remember. In one position water comes out of both cold and hot taps and the other position comes out of cold only. Can you help??? oh, its an 1994 Fleetwood avion. Thanks Rachel

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Cold goes in bottom fitting of water heater, so that valve has to be open, and hot comes out the top, so that has to be open, if there is one there, but any valve in between needs to be closed. There are a few variations so if you can explain where your valves are located in the system more precisely, I can help better. Perhaps you can send a digital picture with reply?

Posted on Nov 12, 2010

  • 5 more comments 
  • rachspeakeas Nov 16, 2010

    Thanks. I dont know how to send you a picture. Do you have an e mail I can send you something to? There only seems to be one valve and in one position the cold runs and the hot doesnt. In the other position(i presume is on) the cold and hot run but it wont run. We fiddled with it once before and got hot water but since weve towed the trailer it isnt working again. Rach

  • Mike Butler
    Mike Butler Nov 17, 2010

    this is a basic 1 valve by-pass set-up, is this like yours?

  • rachspeakeas Nov 17, 2010

    Couldnt tell you. were too scared to pull the heater out of the trailer as its so old. Next to the heater is the locker with all the water bits in it, thats where this tap is ill take a photo of it but how do i get the photo to you. The annoying thing is we had it working before we moved the trailer. Weve just bought it and the guy said the hot water was fine and had been using it for 2 years. I think if you saw the pic you might have more of a clue. Its not an easy job to get to the back of the heater as its built in.

  • Mike Butler
    Mike Butler Nov 17, 2010

    You shouldn't have to pull water heater to get access to that valve. With that said, I have worked on some Avions over the years, and they are a little more of a challenge sometimes, so I won't rule that out completely. That valve, if it's just a normal turn clockwise to close, or counterclockwise to open, and it's on the blue, or lower line going in to bottom of water heater, needs to be open. If it has a big handle, needs to be in normal operation position, or if small valve like in this picture, should be pointing in direction of line going into bottom of water heater, not up. Some of those plastic/nylon valves have been known to start opening only half way after a time, so it may just be that, or else it's check valve probably at top fitting on hot line is stuck and not allowing flow out of water heater.In meantime, there should be directions on how to send pictures on main page, but I'll double check procedure, and get back to you.

  • rachspeakeas Nov 17, 2010

    Fantastic! Ill try and work out getting a pic to you. All the pipes are the same color and you cant really see where they go to or come from. Ill get you a pic. Thanks ever so much for your time, we are living in the van full time and no hot water is a pain as you can imagine. Rach

  • Mike Butler
    Mike Butler Nov 17, 2010

    Here's my e-mail to mail pictures to me. I'll explain to fixya later, just so your not stuck, I'm sure in this case they'll be ok with it.

    ( )

  • Mike Butler
    Mike Butler Nov 18, 2010

    I'll be working at dealership today but not sure we have an Avion on lot but will check and if so, I'll get a look at it as well as picture if we have one. I'll get back to you tonight, In meantime if you have picture, feel free to send them.



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