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Topic ClosedWATER HEATER IGNITION BOARD

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Kahonu37 View Drop Down
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Direct Link To This Post Topic: WATER HEATER IGNITION BOARD
    Posted: 13 Aug 2020 at 9:11pm
You are welcomed, good luck.
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voisj View Drop Down
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Direct Link To This Post Posted: 13 Aug 2020 at 6:45pm
Kahonu37,
Thanks for the input, I found the reset switches they are above the gas valve, a big square rubber cover with two resets on it. the one I was referring to is under the gas valve to the right. it's an oval cover down near the bottom next to the electric switch. we're heading back home in the morning. I plan to take a hard look at it when I get back. thanks for letting me know where the sensor is, I'll let you know how it goes, thanks again.
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Kahonu37 View Drop Down
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Direct Link To This Post Posted: 13 Aug 2020 at 10:20am
Sorry for the delay.

My ignition control board, on the 2018 179, is located under the bed Taped to the water heater. As suggested remove tape an tape from back of circuit board an look at Q3. if you note a burn mark the board, it is bad. You can also have the board it tested, by RV dealer, allegedly.

The black box you referred to, contains the reset switches, for both the 120 volt (left)  and 12 volt (right) systems. There are several YouTube videos on these items.

I don’t recommend unsafely lighting it from the flume.

Let me know if this helps.
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Direct Link To This Post Posted: 13 Aug 2020 at 8:30am
Kahunp37,
Still noodling the hot water heater, it's the same model as yours. is the control panel behind the small oval black case below the ignition tube near the gas valve?
And now won't light at all, there's no spark, but gas does flow. I can light it with a lighter though but it still goes off after five or six seconds. Fortunately I could just fire it with the generator on electric to get hot water from my wife's nightly shower. As I said before the stove is fine the furnace works fine the refrigerator on propane works fine so it must a problem in the unit somehow.
Thanks John
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John&Sue,SLO,CA
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Direct Link To This Post Posted: 12 Aug 2020 at 5:04pm
Thanks for all the ideas to check! The burner blows full force for the first six seconds and then goes out oh, it did this three times. I'm thinking it must be the flame sensor. I took it apart made sure the Gap was correct in position properly, and no change
Thanks MJ for the manual going to take a hard look at it tomorrow.
Real spotty cell service up here.
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Direct Link To This Post Posted: 12 Aug 2020 at 1:49pm
or a wasp nest. I put screens on all openings to prevent them from getting in and building nests.
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JR View Drop Down
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Direct Link To This Post Posted: 12 Aug 2020 at 1:46pm
You might want to check for a spider web in the burner tube that also could be a contributor.
Jay

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offgrid View Drop Down
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Direct Link To This Post Posted: 12 Aug 2020 at 1:23pm
Its probably the flame probe electrode not contacting the flame properly. If it doesn't make contact the control board will think that the flame has gone out and will shut off the propane for safety. The probe can be adjusted. Here is a link to the service manual.  Troubleshooting guides are around page 19.

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mjlrpod View Drop Down
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Direct Link To This Post Posted: 12 Aug 2020 at 12:52pm
You are obviously getting gas and an ignition spark if it fires for 6 seconds. Sounds like maybe a blockage? and it can't keep up with enough propane fast enough? 
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Direct Link To This Post Posted: 12 Aug 2020 at 10:39am
Quick water heater question,
I'm at Shenandoah national Park at 3000' my water heater fires for 6 seconds and then the flame turns off this started happening yesterday, it worked fine the first two days.
Propane tanks are full and everything else propane related works fine.
Any thoughts?
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John&Sue,SLO,CA
2016 180 HRE, 2013 F150 Eco Boost
 
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