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    GGuy8's Avatar
    GGuy8 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Apr 28, 2011, 10:30 AM
    My unit keeps running after the t-stat is in the off mode and the fan is in the auto.
    I have checked the tstat and the wiring could it be the relay in the board?
    Seann's Avatar
    Seann Posts: 32, Reputation: 1
    Junior Member
    		  
    #2

    Apr 28, 2011, 10:08 PM

    Which type of heating system is it-if it's a Gas Furnace then in a gas furnace the fan is controlled by the system it self.
    U can try 1 thing
    If system is in off mode and fan in in auto
    If fan still runs
    Remove the stat off the wall
    If fan still runs
    Remove G wire out of the terminal
    If still fan is running then its your heating system for sure
    Kyle_in_rure's Avatar
    Kyle_in_rure Posts: 341, Reputation: 10
    Full Member
    		  
    #3

    May 1, 2011, 02:11 PM
    Also keep in mind sometimes it takes the unit a minute or two to cut off after you switch it to off.
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
    Ultra Member
    		  
    #4

    May 2, 2011, 07:29 AM
    If the unit has a status LED, it may provide a clue as to why the fan is running. Units with this feature usually have a label on the blower access panel or within the blower compartment, with a legend describing the status LED activity.
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