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Old 03-29-2014, 11:42 PM   #1
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Semi-Explosion From LP Water Heater

Maybe a "POP" is more accurate. But it was loud enough for me to take note.

I have a 1999 Winny Adventurer since new.

Assumably what is happening in the "chamber" of this water heater ignition area is that the LP is flowing, but the "spark" thingy is not firing until there is way too much LP in that area.

If I'm correct:
1. Anyone out there know where I can locate and replace this "spark" thingy??
2. Is this a technical fix/replacement or a relatively easy un-screw and re-screw???

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Old 03-30-2014, 01:41 AM   #2
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Go to E-Bay and type in "atwood rv water heater".

You will find what your after.

2003 Winnebago WFG33V Adventurer - 8.1 Gas, Workhorse Chassis - Medium Titanium Metalic

"For GOD'S sake, be human"
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Old 03-30-2014, 05:20 AM   #3
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There are several possible issues but I would start by measuring the spark gap and comparing it against the specs. I have worked on two furnaces with DSI ignition and on both of them the things came from the factory set way wider than spec. You described the symptoms well.
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Old 03-30-2014, 06:19 AM   #4
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Originally Posted by wa8yxm View Post
There are several possible issues but I would start by measuring the spark gap and comparing it against the specs.
I agree. Either the gap between the probes and the igniter is off, or they need to be cleaned.
Jay & Peggy Monroe with Dolly
Can't take it with you - don't plan on leaving any behind
2016 Newmar London Aire 4553, Spartan chassis
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Old 03-30-2014, 06:57 AM   #5
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On my old tt, had to clean the spark area with a wire from the middle of a bread twisty thing. You will also want to clean out the burner tube. You would be surprised at all the soot that gets in there. Otherwise if too much soot and or cobwebs are there, it could catch fire. that is why you will see burn marks on a persons exterior wall above the water heater area.

I'll take the screw out for the upper burner tube vent. I'll attach a rag to a old flexible sink spray wand and run it into the upper burner tub. Then I'll take my air hose and give it a good shot of air to brow out all the junk. I'll do this once or twice a year. Here is a pic of what I use to clean out my burner tube Burner Tube Cleaner

Here is link to some Youtube video's on RV water heater fixes.

Do you have a Atwood or a Suburban water heater?
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