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    jd1008's Avatar
    jd1008 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Mar 5, 2014, 11:54 AM
    Bryant Plus 80 fan always on - unable to turn it off
    The furnace has a controller board with these model numbers on it: "1012-940-M" "HK42Fz016". I have replaced the batteries in the thermostat (which is brand new).

    The fan stays running. I turned off the system, removed the thermostat, made sure the wires are isolated from each other, and turned the system back on. After a few seconds, I hear a click, a RED LED on the controller board flashes on and off and the fan starts running and never stops.

    Is this caused by a bad replaceable part on the controller board?

    Thanks for your help.
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
    Uber Member
    		  
    #2

    Mar 5, 2014, 12:01 PM
    Return the thermostat to where you bought it... if its new its under warranty... there are no user servicible parts on it other than the batteries.
    jd1008's Avatar
    jd1008 Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Mar 5, 2014, 06:34 PM
    Quote Originally Posted by smoothy View Post
    Return the thermostat to where you bought it... if its new its under warranty... there are no user servicible parts on it other than the batteries.

    Well, if the brand new T. stat is the cause of the problem,
    then I do not understand why the fan behaves the same
    way (i.e runs non stop), even after
    1. turn off the system.
    2. disconnect the thermostat.
    3. turn on the system

    So, it seems that the T stat is not in the equation.
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