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

    Nov 23, 2008, 01:20 PM
    Heating not blowing in AUTO position
    I have a gas heating system with a manual thermostat. The blower does not come on in the AUTO position. It works on ON position. Do I need to replace the thermostat with an electronic one?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Nov 23, 2008, 04:42 PM
    The thermostat is not at fault. The furnace has a component that controls the fan on the heat side. It is usually called a fan and limit control but sometimes just a fan control relay.
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