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-   -   Trane XR80 fan is continuously on (https://www.askmehelpdesk.com/showthread.php?t=503224)

  • Aug 30, 2010, 09:51 AM
    lesurb
    Trane XR80 fan is continuously on
    Furnace fan is continuously on, regardless of the FAN switch position (ON or AUTO). The thermostat is wired in three-wire configuration (Common, G, W). Model numbers:
    - furnace: Trane XR80
    - thermostat: White-Rodgers 1F78
    Could anybody give me advice about how to troubleshoot and solve the problem?
    Les

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