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    rickster558's Avatar
    rickster558 Posts: 5, Reputation: 1
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    #1

    May 24, 2009, 08:53 PM
    Wiring blower motor relay
    My blower motor relay burned out and I replaced it with a universal relay. It has R, G, W, Y, and C. I got the wiring right for the furnace but I don't know where the wires for the air compressor go. The wires from the compressor are red, white, green and blue. I put the red wire on the W and the red on the Y. Blower starts on furnace when I turn thermostat on cool but compressor does not kick on. Any suggestions?
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
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    #2

    May 24, 2009, 08:59 PM
    Turn the power off to the outside unit remove the cover and see what wires are being used. You replaced more than a blower relay if you had to disconnect that many low voltage wires.
    rickster558's Avatar
    rickster558 Posts: 5, Reputation: 1
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    #3

    May 24, 2009, 09:08 PM
    The red and white wire are being used. The green and blue are routed to another box and are not connected to anything
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    rickster558 Posts: 5, Reputation: 1
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    #4

    May 24, 2009, 09:10 PM
    Sorry the post says I hooked the red wire twice. It was supposed to say the red is hooked to the Y and the white is to the C
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    #5

    May 24, 2009, 09:17 PM
    The only simple thing left to do is make sure the breaker is on going to the A/C unit.
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    rickster558 Posts: 5, Reputation: 1
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    #6

    May 24, 2009, 09:20 PM

    Does the wiring sound right to you? Red to Y white to C?
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    #7

    May 24, 2009, 09:26 PM
    Yes with just two wires it will not make a difference. They are not polarity correct. They can go either way.
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    KC13 Posts: 2,556, Reputation: 99
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    #8

    May 25, 2009, 05:50 AM
    Quote Originally Posted by rickster558 View Post
    I put the red wire on the W and the red on the Y.
    Check your wiring again. Did you connect outdoor unit circuit to "Y" and "W", or "Y" and "C"? The second combination is correct.

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