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

    Dec 14, 2011, 09:36 AM
    My heil gas heater furnace won't shut off
    My heil natural gas heater furnace won't shut off. It just keeps running and heating. Installed a new thermostat with no success. Prior to this happening I just had my hardwood floors resurfaced and sealed with polyurethane. Did that get into the system and gum up some mechanical release? I have to manually switch off the unit to stop the heating/blowing or it will get 90 degrees in here. I also noticed the squeal cage is rattling causing the blower to make a vibrating noise. I am in Arlington Va 703 3685466. Thank you
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Dec 14, 2011, 11:16 AM
    Did you install the new stat before or because of the problem?
    drtom4444's Avatar
    drtom4444 Posts: 3,282, Reputation: 145
    Ultra Member
    		  
    #3

    Dec 15, 2011, 03:20 AM
    Check the gas valve with a volt meter and see if it is getting 24 volts when you don't want it to run. If not your gas valve is bad, but I suspect you have a short which is powering the gas valve on. You either wired it wrong or have a short between "W" and "R."
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