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Old 04-13-2019, 10:52 PM   #1
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Atwood water heater not igniting

We have an Atwood water heater. Model G6A-8E. It is a six gallon, gas only, electronic ignition heater. It is original to our 2018 Coachmen Leprechaun 210RS and is a little over a year old.

When we turn the water heater on at the control panel inside the RV the igniter clicks, but I do not see any spark anywhere. The DSI light comes on, flickers a little and goes out. There is gas at the heater because we can smell it when we initially turn the switch on but the heater does not light off. It attempts to start a total of three times and then locks out until the switch on the control panel is reset. There is water in the tank and the valves are all set to the proper dewinterized positions. The system has worked within the past two days.

The 2 amp fuse on the tank circuit board is good. The 15 amp fuse in the fuse box labeled "Heat Tank" is also good, although I have no idea on earth what this fuse does given there is no electric heating capability with this unit.

Any ideas on where my problem may be?
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Old 04-13-2019, 11:44 PM   #2
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I had a similar problem right at one year old, I could hear the click, click, click of the igniter, but no spark and then the red light would come on after three attempts. All I did to fix it was remove the igniter with the one little screw that holds it on and clean the probe and the area where it sparks to with a little wire brush, reinstall the igniter and it fired right up. It's been fine for two more seasons so far without failing....*Knock on Wood*


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Old 04-14-2019, 08:50 AM   #3
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Try what Randk says first. Those atwoods are famous for bad boards, had the same problem mine was the garbage board. It wouldn't allow gas to pass. If it is the board, when you install the new one put a spacer in to keep it off the face, the solder joints break from that little heat on the face it seems, been a year now with mine no problems, but I also carry a spare board, they are that bad.
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Old 04-14-2019, 10:51 AM   #4
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sounds like air in system did you try lighting stove all burners? and start refrigerator on propane? then try your hot water tank.
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Old 04-14-2019, 11:07 AM   #5
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Did you have water in the tank when you tried to light it? If so, the other thing to look at is next to the 2 amp fuse. It is called the thermal cut off. Easy, cheap replacement.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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Old 04-14-2019, 11:35 AM   #6
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The light coming on and then going out is supposed to be the indication that the heater did light. maybe bad board.
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Old 04-14-2019, 12:16 PM   #7
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Winter bypass

I assumed the winterize bypass valve is not still set to bypass. Did you check this?
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Old 04-14-2019, 12:34 PM   #8
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Igniter

Quote:
Originally Posted by RandK-M View Post
I had a similar problem right at one year old, I could hear the click, click, click of the igniter, but no spark and then the red light would come on after three attempts. All I did to fix it was remove the igniter with the one little screw that holds it on and clean the probe and the area where it sparks to with a little wire brush, reinstall the igniter and it fired right up. It's been fine for two more seasons so far without failing....*Knock on Wood*


Ray
I think this is the best suggestion, so far. You have gas ,ignition, that eliminates a circuit board problem. I would also take suggestion and clean igniter and/or reset igniter gap before proceeding any further. IMHO

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Old 04-14-2019, 01:44 PM   #9
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Quote:
Originally Posted by RandK-M View Post
I had a similar problem right at one year old, I could hear the click, click, click of the igniter, but no spark and then the red light would come on after three attempts. All I did to fix it was remove the igniter with the one little screw that holds it on and clean the probe and the area where it sparks to with a little wire brush, reinstall the igniter and it fired right up. It's been fine for two more seasons so far without failing....*Knock on Wood*


Ray
RandK-M, WitchDoctor and Bytesponge, Thank you. I think this is the best starting point too and as soon as the driving rain and wind down here on the Florida panhandle coast let up a little bit, I'll go give it a try. Appreciate the time and though of your responses.
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Old 04-14-2019, 01:45 PM   #10
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Quote:
Originally Posted by cavie View Post
The light coming on and then going out is supposed to be the indication that the heater did light. maybe bad board.
I know. Leaves me scratching my head too. If the suggestion for cleaning and checking the gap on the igniter doesn't work, this is my next guess.
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