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    randolf2's Avatar
    randolf2 Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Oct 25, 2009, 09:07 AM
    Furnace heat won't stay on
    I HAVE A GOODMAN FURNACE THAT HAS BEEN ACTING UP AS OF A FEW DAYS AGO. I HAVE A PROGRAMMABLE THERMOSTAT AND WHEN I ASK FOR HEAT THE FOLLOWING OCCURS:the blower comes on about twenty seconds later the thermocoupler engages and the gas fires. The gas only stays on for a few seconds then shuts down. Immediately the whole process starts again. A troubleshooting test suggests it might be a pressure switch. I conducted a continuity test and the switch seems OK. I also checked the flu for blockage there is no blockage. Any help would be appreciated.:confused:
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Oct 25, 2009, 01:22 PM
    Clean flame sensor with steel wool or sand paper.
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