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

    Feb 5, 2009, 03:08 PM
    How do I wire my furnace blower to the wall power?
    I have a 30 something or more year old furnace that won't turn on, I think I blew out the switch that changes its speed and when you turn the thermostat on it fires up the grill but the fan never turns on. I want to see if the blower even works, it has three wires coming from it. White black and red. Can I put a cord on this and plug it in? If so which wires do I use?

    I tried black on negative and red on the switched positive side and got nothing, then removed the red and changed it for white and blew the circuit. Should I dare try red on positive and white on the negative?

    Yes I have no idea of what I'm doing, and its COLD! :)
    dac122's Avatar
    dac122 Posts: 463, Reputation: 17
    Full Member
    		  
    #2

    Feb 6, 2009, 07:20 AM

    Black is high speed hot, red low speed hot, and white common/neutral. Be careful.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #3

    Feb 6, 2009, 08:42 AM
    Quote Originally Posted by dac122 View Post
    Black is high speed hot, red low speed hot, and white common/neutral. Be careful.

    Be very careful
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