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-   -   Furnace Manual Fan OK - Not Auto Though (https://www.askmehelpdesk.com/showthread.php?t=34875)

  • Sep 22, 2006, 12:14 PM
    Jazzisme
    Furnace Manual Fan OK - Not Auto Though
    I have a York Stellar Plus (15yrs old) with an Auto and Manual Fan Switch on the T-stat. The Fan will work when turned to ON (at the T-Stat) but it will not come on when you turn the heat on with the Fan switch turned to Auto. I have replaced the Limit Switch.
    No difference
    Thanks!
  • Sep 22, 2006, 03:28 PM
    juggallojed
    Could be a bad winding in the motor(ac uses high speed & heat uses low)

    Could be a damaged control board as well

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