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-   -   Error Code 79 from TRANE XL-90i on TCONT900AC43UA thermostat. Why and how to fix it (https://www.askmehelpdesk.com/showthread.php?t=513083)

  • Oct 3, 2010, 05:38 AM
    GiovanniI
    Error Code 79 from TRANE XL-90i on TCONT900AC43UA thermostat. Why and how to fix it
    The error code 79 appear when the heat should be coming on

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