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Old 10-29-2012, 10:16 AM   #15
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Muddypaws - I cleaned the whole burner assembly, including the jet. As far as the thermocouple, I'm not sure exactly where this is? Are you referring to the ECO?

I did clean the contacts on the board.

Also, I have adjusted the gas/air mixture with no new results.

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Old 10-29-2012, 10:53 AM   #16
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I have a different model Attwood but I'm more familiar with Suburbans.

One or more of the probes you spoke of should be in the flame path. If it's bad or not getting hot enough to generate the required voltage it will be sensed by the board as a 'flame out'.

If the switch inside your RV stays red or otherwise indicates a problem that's probably it.

If you have no red light then the problem could be the water high-temp switch. In a nutshell - when that goes bad it thinks the water is already hot and shuts off the gas.

Good luck!

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Old 10-29-2012, 12:17 PM   #17
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Originally Posted by andrew99 View Post
ga traveler - are you saying that if I want to just get the probes, I can't do this? Are you saying that I need to get both a new board (even if it's not bad) and the probes because the new style of probes uses a new board? I'm just trying to make sure I understand thank you for all of your help.
O>K lets go back to basics. You have a board with a spark plug connector. It is called that because the spark lead is shaped like a spark plug lead. If you have to speak to a board rep. make sure you tell them this. The small lead on the right is a flame sense wire. It is NOT a thermocouple. However it works like one. It is in the flame path and senses the presence of a flame. It tells the board to supply 12 volts to keep the gas valve open. The fact that it worked for over a minute AFTER you cleaned everything up, tells you your board is probably weak and not sensing properly. I am almost positive you don't have a gas valve problem, because they usually won't open if bad. You can test for this by holding a test light on the positive connector at the gas valve. If the light goes out just before the flame shuts off. That tells you the board told it there was no flame and shut the 12 volts off to close the valve. The new boards have just two probes. One is just a ground for the spark to jump to. The other is a spark AND flame detector. There is only one wire going to the flame tube. It sparks to start the flame and then is used to detect the flame. They will probably want you to replace the board and the probes.

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32 years mechanic at Delta Air Lines 15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.
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heater, water

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