I have a lennox GCS16H-311-75-1P the furnace will run for approx 3-5 minutes then flame goes out...3 tries later it will lite back up and run like a top for 3-5 minutes inducer motor and blower will stay on for this period...pulled the igniter\flame sensor assembly out and cleaned...still the same problem help

Asked by ricky on 12/02/2011 0  Answer

ManualsOnline posted an answer 12 years, 10 months ago

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