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  1. #1

    Trane Error code 91

    Got a Trane XC95 communicating furnace showing an error code "91" at the stat. Have no heat. What does code 91 mean and how do I reset it?

  2. #2
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,758
    Better to call the contractor and have him fix it.

    Sorry, this is not a DIY site.
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    How many times must one fix something before it is fixed?

  3. #3
    Join Date
    Aug 2010
    Location
    N.E. Indiana
    Posts
    45
    Error 91 is a communication fault.

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