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Old 06-01-2014, 06:31 PM   #1
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Water heater issue

We have a 23b and today we turned on the water heater (propane) and smelled smoke. I opened the compartment from outside and saw that the flame was going all the way thru the heating tube and then out the vent causing the side of the camper to be covered in soot.
The flame is yellow and sort of lazy. Not hearing the rushing sound that you normally hear. Could it be a plugged oriface? We had a full tank of propane and had been using the furnace all night with no problems.
Thanks in advance for your reply!

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Old 06-01-2014, 08:18 PM   #2
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Welcome to the Forum!

Probably not a plugged orifice or you wouldn't have a flame at all. Most likely the air shutter on the burner tube is plugged with a spider web or the combustion chamber has some foreign material that burst into flame and shot out the chimney. Another possibility is the gas valve but I'd check the easy/cheap/obvious stuff first.

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Old 06-01-2014, 08:29 PM   #3
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x 2 what mcfarmall said. I had similar thing happen to me with my old camper. Had a dead bug inside the metal tube where you can adjust the air mixture.
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Old 06-01-2014, 08:35 PM   #4
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Old 06-02-2014, 12:37 AM   #5
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Sometimes bugs will make nests in the heater. A lack of air would cause the gas to take longer to burn, hense the yellow flame that is still burning in the exhaust vent.
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Old 06-08-2014, 09:12 PM   #6
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Mine did the same thing this weekend with flames seen in the exhaust. I shut it down and let it sit awhile. Next time it was with blue flame. My guess at the time was that it needed to purge the line some, but bugs could be a possibility. I had tested maybe a month earlier with no issues.

Worked fine each time after that, but I've been keeping a close eye on it.
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Old 06-08-2014, 09:18 PM   #7
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If you have air compressor, clean out the burner and chimney.

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