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-   -   Wiring blower motor relay (https://www.askmehelpdesk.com/showthread.php?t=357505)

  • May 24, 2009, 08:53 PM
    rickster558
    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?
  • May 24, 2009, 08:59 PM
    T-Top
    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.
  • May 24, 2009, 09:08 PM
    rickster558
    The red and white wire are being used. The green and blue are routed to another box and are not connected to anything
  • May 24, 2009, 09:10 PM
    rickster558
    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
  • May 24, 2009, 09:17 PM
    T-Top
    The only simple thing left to do is make sure the breaker is on going to the A/C unit.
  • May 24, 2009, 09:20 PM
    rickster558

    Does the wiring sound right to you? Red to Y white to C?
  • May 24, 2009, 09:26 PM
    T-Top
    Yes with just two wires it will not make a difference. They are not polarity correct. They can go either way.
  • May 25, 2009, 05:50 AM
    KC13
    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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