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    lakeguy72's Avatar
    lakeguy72 Posts: 9, Reputation: 1
    New Member
     
    #1

    Feb 19, 2007, 10:54 AM
    Fan Blower doesn't come on in Fan,heat or cool
    Yesterday I turned on my heat(coil in air handler) and everything worked fine. Last night I turned it on again and the fan wouldn't come on no matter where the switch was: fan only, heat or air. I made the appropriate temp changes for heat/air. There is a humming noise coming from the heating coil area. The coil area was getting warm. I can spin the blower wheel easily. There is a Honeywell humidity control next the t-stat and it was in the "ON" position. The wiring diagram shows a fuse near what I think is the printed circuit board box and I found a red cover labelled "buss" I couldn't get the cover off to see if there is a fuse under it. The unit is a TRANE TWE030C140
    Any thoughts
    Thanks
    Roger
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member
     
    #2

    Feb 19, 2007, 03:50 PM
    Bad PC board or fan relay is my guess.
    lakeguy72's Avatar
    lakeguy72 Posts: 9, Reputation: 1
    New Member
     
    #3

    Feb 19, 2007, 05:30 PM
    When I switch the breaker on I hear a "click" which I think is coming from the "contractor"and the hum from the heating coil area. This is after I turn the Humidity switch to "ON".
    Is there a way to jump the fan relay? BTW what does the fan relay look like?
    Thanks
    Roger

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