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    david58's Avatar
    david58 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Sep 28, 2011, 08:25 AM
    Air handler blower motor buzzes won't turn
    Hi, I have 2 Carrier Weathermaker 8000 AC & heater units. Recently on one, the LED Thermostat went blank & unit stopped working. I switched out T-stats with my other unit and it also went blank showing both are working. However, when the Fan on the T-stat is switched from "Auto" to "ON" there is a loud humming noise coming from the air handler. I tested wires coming out of wall to T-stat and going into the air handler control board and they read 27 V. I isolated the buzzing noise to the blower motor. Then I switched capacitors with my good unit and the problem persisted. Does this mean I need an new fan motor?

    Thanks for you help
    JonesHVAC's Avatar
    JonesHVAC Posts: 173, Reputation: 12
    Junior Member
    		  
    #2

    Oct 17, 2011, 09:46 AM
    Sounds that way... are you getting 120v to the blower motor?
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