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ruckamuck 10-29-2010 09:09 PM

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.:

Plumber101 10-29-2010 09:23 PM

The orfice on the last burner could be clogged

ruckamuck 10-29-2010 09:31 PM

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

kenmac 10-29-2010 10:08 PM

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

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