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wesley01 01-13-2011 03:21 PM

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??

yuri 01-13-2011 04:04 PM

1 Attachment(s)
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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