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Old 01-13-2011, 04:21 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??

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Last edited by wesley01; 01-13-2011 at 04:23 PM. Reason: typo
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Old 01-13-2011, 05:04 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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