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    Lonnie123's Avatar
    Lonnie123 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 24, 2006, 11:21 AM
    No Warm Air
    I have a Yorx Natural gas furnace. When I turn it on by the thermostat, the pilot warms up, the gas lites and air begins to blow for a few seconds. Then the gas shuts off and the system continues to blow only cold air.

    What is the problem?
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member
    		  
    #2

    Nov 24, 2006, 12:05 PM
    How long do the burners stay lit? If about 15-20 seconds it is a dirty flame sensor. If it stays on a few minutes, its probably poor airflow, filter, blower, obstruction in the return air to furnace.
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