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Old 10-29-2010, 10:09 PM   #1
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Trane XE78 One Burner wont ignite


I have a trane xe78 furnace. It has a "glow stick" ignition and 5 burners. The last burner (furthest from the ingition) has the flame sensor on it. All of the burners ignite except for the last one with the sensor so the whole thing shuts down after a few seconds. I'm wonder what would cause this. When I move the sensor to the first working jet (next to one that isn't working) it stays on and runs just fine. Could the last gas valve be clogged for some reason or could there be a fail safe for a bigger issue keeping the 5th burner from igniting so it will shut down? Any help would be much appreciated.:

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Old 10-29-2010, 10:23 PM   #2
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Trane XE78 One Burner wont ignite


The orfice on the last burner could be clogged

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Old 10-29-2010, 10:31 PM   #3
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Trane XE78 One Burner wont ignite


recommend just getting a thin wire brush to clean it or will I have to take the piping apart?

Last edited by ruckamuck; 10-29-2010 at 11:08 PM.
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Old 10-29-2010, 11:08 PM   #4
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Trane XE78 One Burner wont ignite


If you have the room,you may be able to clean it without removing
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