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Author Topic: Water heater LP only works with cover door open  (Read 16 times)

Malibu39

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Water heater LP only works with cover door open
« on: Today at 12:06:38 PM »
Okay water heater experts. When I run my water heater on LP, it lights up, goes for a few minutes and starts spitting and sputtering, then goes out. If I pull the cover door open to have a look it it works great, but as soon as I shut the door the flames starts sputtering.

Thanks in advance.
2004 Itasca Horizon 40KD 350 Cummins, 60,000 miles

Sun2Retire

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Re: Water heater LP only works with cover door open
« Reply #1 on: Today at 12:24:02 PM »
Okay water heater experts. When I run my water heater on LP, it lights up, goes for a few minutes and starts spitting and sputtering, then goes out. If I pull the cover door open to have a look it it works great, but as soon as I shut the door the flames starts sputtering.

Off hand I'd say it's the air mixture adjustment. Would seem to indicate insufficient air based on opening the door making everything OK. You might try loosening the set screw and sliding the adjustment more open perhaps 1/8-1/4" and see what happens.
Scott
Fulltiming in a 2005 Newmar Dutch Star 3810, Spartan, Cat C7 350
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2002 Dodge RAM 1500 Quad Cab toad
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