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    kramer850's Avatar
    kramer850 Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Nov 4, 2009, 11:09 AM
    Furnace does not stop running
    Hello, I am having problems with my furnace. It just stays on. The t-stat seems to have no control on the furnace. I actually disconnected it and the furnace still just keeps running. It's a slant fin furnace with a beckett oil burner model AFG. If that helps at all. The only way to control it is to turn off the master switch. I usually turn it on for an hour or two then off till needed again. Thank you for any info.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Nov 4, 2009, 11:14 AM
    Disconnect one of the thermostat wires from the burner control. Usually a R red or W white wire will do. If the unit stops running you have a thermostat wire or thermostat problem. If the unit keeps running after disconnecting one of the thermostat wires then you have a burner safety control problem.
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