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    KenC24AA's Avatar
    KenC24AA Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Feb 16, 2007, 06:06 AM
    Oil heating
    Burner won't shut off when temp is reached
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Feb 16, 2007, 06:10 AM
    Usually that is a thermostat problem. But it can also be a relay contained in the furnace safety device. IE cad cell primary or stack switch. To test remove one of the thermostat wires off the burner control. If it shuts off you have found a bad thermostat on a pinched thermostat wire. If it keeps running then you have a bad primary or stack control depending on what kind of safety device came on the unit.
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