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    mds30092's Avatar
    mds30092 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Apr 21, 2008, 10:42 AM
    Furnace blower fan will not turn on
    I have a comfortmaker furnace about 15 years old. When I turn the heat on it works just fine the gas comes on and the blower blows warm air into the house. When I turn the air conditioner on the compressor and outside fan come on but the blower in the furnace will not come on. I tried the fan on with the thermostat switch and still no air. I tried another thermostat and still could not could the blower to turn on. I am woundering if it is the control module in the furnace. It's a General 90 model 50A50-110.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Apr 21, 2008, 11:04 AM
    Could be the fan relay if so equipped.
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