Question about RTO Atwood DSI-RV Water Heater-6 Gallon

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I have an Atwood 6 Gallon (model-G6A-7) water heater in my travel trailer. My pilot wont stay lit, but looks strong, I've changed the thermocouple but still have the same problem. It goes out once the button is released. Its a new thermocouple, it gets glowing red hot and the flame looks good. thanks

Posted by Ben Southgate on


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Mike Butler

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Make sure flame is good under thermocouple probe so that it gets proper sensing of flame, and if that's o.k., before you change gas control, remove thermocouple fitting where it attaches to gas control and spray wd-40 in the hole and twirl up some steel wool and push it in the hole and twirl it to try and clean the surface inside there as well. Then spray it out with WD-40 once more to flush out shavings etc, and if you have compressed air, blow it out as well. Now re-attach fitting and snug it, then re-try pilot again. If it works, great if not replace gas control. Let me know the results. You do realize that it should be a certified technician who changes that gas control if necessary, correct?

Posted on Jan 07, 2011

  • 1 more comment 
  • Ben Southgate Jan 07, 2011

    Thanks for the advice. I did some extra research by the model number on the control valve. Seems it was the original one and the trailer is an 86 so I dare say it was shot, It did some weird stuff when I first fired it up! I managed to find a new 'updated' control valve and pilot assembly for $100 ( taxes), got it together today so much quicker and less painful than fault finding! Took a little to get it lit due to air in the line but now its running like a charm! I dare say it was the valve. thanks again,

  • Mike Butler
    Mike Butler Jan 09, 2011

    Glad to hear your up and running, and i hope you didn't take my comment about certified technician as a negative comment regarding your ability to perform the task, as that was not my intent. I'm sure you realize it was something we have to do in order to insure the safety of all those who ask questions, as well as liability reasons. We never really know the amount of experience the person asking the question has,so we have to err on the side of safety especially.
    Here's a link to a PDF files you can download that is a service manual for those, and other appliances you may have in your trailer which may come in handy in the future. just scroll down the page and find yours. Happy Camping!

  • Ben Southgate Jan 09, 2011

    No I totally understand! and knew where you were coming from about the comment! thank you for your advice and I'll certainly check out the link you gave. The Trailer itself for an 86 and 2 previous owners, I got lucky with manuals, they seem to have kept everything! Such a bonus. Upon looking at the old valve it was certainly time to replace, so glad I did. Now onto the rest of the rehab!



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