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    bigdog02's Avatar
    bigdog02 Posts: 17, Reputation: 1
    New Member
    		  
    #1

    Oct 28, 2008, 06:07 PM
    Blower fan will not turn off
    I have a 20 year old gas comfortmaker furnace with a 2 speed fan. Low speed blower fan does not turn off. Is this a relay or wiring problem?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Oct 28, 2008, 06:10 PM
    If the fan is being used in the heat mode and will not turn off it is probably the fan and limit control. It is possible a relay could be the problem also BUT I would check the fan and limit first. Sometimes you can tap on the control and see if it turns off.
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