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Old 10-12-2009, 04:08 PM   #1
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Trane XE 80 Furnace - flame out and restart


I have a Trane XE 80 Furnace. My problem is that we woke up this morning to a cold house and the furnace blowing cold air. I first thought was that the fire sensor needed cleaning. But after cleaning and restarting the furnace I found that the flame would go out after the burner was lit and the furnace running at full pace.
Upon examination, I triggered the problem when I moved a wire attached to the pressure switch. The wires seem to have a solid connection to the switch however. The diaphragm operated switch is on the verge of open/closed once the fan turns on under a call for fire. My first though was to change this pressure switch. I found this to be an expensive proposition.
Is there a way to test the pressure from the induction draft motor chamber to determine if the problem is in the switch versus a low pressure problem within the chamber?

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Old 10-12-2009, 04:50 PM   #2
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Trane XE 80 Furnace - flame out and restart


Is there a flash code and if so what is it?

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Old 10-12-2009, 05:17 PM   #3
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Trane XE 80 Furnace - flame out and restart


Check the code as stated. Then you may want to inspect the flue piping for debris and possible birds.
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Old 10-12-2009, 05:27 PM   #4
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Trane XE 80 Furnace - flame out and restart


Their is a flash code. Eventualy the system lock out with a "no flame, chedk for polarity.
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