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

    Jul 14, 2010, 10:28 AM
    A/C mode, Lenox furnace blower does not come on. New Capacitor and Motor. Still broke
    In A/C mode, blower motor will not come on. I replaced motor and capacitor but it still does not come on. Will not run with thermostat in RUN mode either.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jul 14, 2010, 11:34 AM

    The A/C fan blower motor relay is probably defective. On some units it is located on the control circuit board located in the furnace. It also usually means you have to replace a expensive control board. Before replacing the control board/relay I would perform the standard tests by electric meter or jumpering out the relay on a temporary basis. If the circuits would have been tested first you might have saved the expense of the new motor.
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