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Old 01-13-2011, 03:21 PM   #1
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lennox elite series

Lennox Elite series -- furnace won't always kick in when the thermostat tells it to. It will ignite and begin forcing heated air into the reservoir and then cut out after about 3 seconds. sometimes flipping the furnace power off and back on again will reset the problem and it will work. Not sure whats going on here??


Last edited by wesley01; 01-13-2011 at 03:23 PM. Reason: typo
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Old 01-13-2011, 04:04 PM   #2
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lennox elite series

Clean the flame sensor AND the face of the burner it sits in front of with fine emory paper. Looks like this. Post the complete model # for more info.
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"Cut it twice and it is still too short".
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