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Old 03-15-2016, 12:01 PM   #1
2 Rivet Member
1994 34' Excella
Kalamazoo , Michigan
Join Date: Mar 2014
Posts: 68
Furnace won't stay on...need help.

I tested the furnace about a month ago, and it worked perfectly.

Now, fans start normally, burner lights normally, burns for about 10 sec, then shuts off. On shore power, fresh lp tanks, all else working normally. I suspect that something like a safety system is shutting off the main gas valve.

Any ideas?

Thanks in advance...

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Old 03-15-2016, 12:09 PM   #2
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1991 34' Excella
Princeton , New Jersey
Join Date: Aug 2003
Posts: 6,311
Images: 12
There is a proof of flame probe that is placed so it should feel the flame and signal the gas valve that there is a flame. That probe may have been moved out of the flame, not likely, or it may have failed.

2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles

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Old 03-15-2016, 03:57 PM   #3
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1998 30' Excella 1000
Livingston , Texas
Join Date: Jan 2014
Posts: 546
With the age of your unit, it could be the board. Try cleaning all the connections. They are not cheap. I would inspect the condition of the combustion chamber before I replaced the board.
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Old 03-15-2016, 04:19 PM   #4
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1998 30' Excella 1000
Livingston , Texas
Join Date: Jan 2014
Posts: 546
For other things to check, try looking at the trouble shooting info starting on page 28 in this reference:
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Old 03-16-2016, 11:18 AM   #5
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2012 16' Sport
2015 19' Flying Cloud
Seattle , Washington
Join Date: Oct 2014
Posts: 24

I was having the same issue a while back.... Everything worked but the heater. It turned out that there was a plumbing leak that dripped water onto the heater's circuit board.
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