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WanderingBrady's avatar
Aug 17, 2016

Water Heater Wont Stay Lit

I have an atwood g6a-8e water heater and have run into an issue -- it wont stay lit more than a few seconds.

Back story: The pressure relief valve was weeping so i replaced that and while i was at it replaced the anode drain plug. When I put it all back together i made sure the tank was fully pressurized and the relief valve worked and in the process splashed some water on the front.

Went to turn it on and it ignites, but then goes out very quickly. So i started to fiddle with it -- cleaned contacts and scrubbed the ignitor mainly. NADA. Before this it worked fine besides leaking water which was channeled from the front away using foil.

I checked the distance between the ignitor and the ground rod. I also used a heavy torch to "side burn" if you will to try to get the ignitor to go out and signal it was functioning. The few seconds it runs the flame looks decent like it always has. I ran the stove a few minutes to make sure no air in the lines. And made sure the components on it were mostly dry.

While messing the probe half the ceramic case broke off so i figure i should start there, but isnt that mostly to prevent stray sparks and wont impact its ability to "sense" flame. One of the thermostats looks a little rusted so maybe thats causing an issue?

I know parts will need to be replaced -- but which and in what order?
  • Went through the same thing. New ignitor, cleaned everything, bypassed safeties. Card was bad all of a sudden. It was 14 years old so either buy $100 card or new wh for $350. Because of the age I went with a new wh.
  • j-d's avatar
    j-d
    Explorer II
    Here's the Service Manual for it courtesy of Chris Bryant. I believe that in a way above my paygrade, the Ignitor serves as a Flame Prover. Not the old Thermocouple way, some kind of ionization test. So I'd guess that if you broke it you need a new one.
    Did you get the Control Board wet?
    I do know that Atwood water heaters are bad about poor contact at the edge connector to the control board. Unplug, clean the board edge contacts with a pencil eraser, re-tension the spring contacts in the connector with a dental pick.