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-   -   Wiring Diagram For Friedrich Furnace (https://www.askmehelpdesk.com/showthread.php?t=353398)

  • May 13, 2009, 12:52 PM
    tdsmothermon
    Wiring Diagram For Friedrich Furnace
    Need to change the blower speed on an old Friedrich central air furnace... model number GHA075NDC. Wiring bloc has termanals for fast, medium fast, medium slow and slow. Anyone have service manual, wiring diagram or remember wire locations?
  • May 13, 2009, 01:55 PM
    Joshdta

    You should have 4 wires coming from the motor
    Black- high
    Blue-med
    Red-low
    White-common

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