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  1. #1

    Lennox GCS3-1353-350410Y - Wiring Diagram and Service Manual

    Does anyone has access to hopefully the wiring diagram for this OLD unit? Can't get the heat on and multiple issues with wiring but the diagram is long gone (worn off). Any help is appreciated.

  2. #2
    Join Date
    Oct 2010
    Anderson, South Carolina, United States
    probably cracked, check the hx thoroughly and then check again
    Heating/Cooling Services Inc.

  3. #3
    Join Date
    Oct 2013
    Alberta Canada
    I can't help you with your diagram, but I can sympathize with your pain. Gotta love 150 white wires with all the ink lettering worn away.

  4. #4
    Join Date
    May 2010
    I know this is late but give this a try
    Attached Images Attached Images

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