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    jeb1029's Avatar
    jeb1029 Posts: 2, Reputation: 1
    New Member
     
    #1

    Oct 16, 2011, 04:55 PM
    Pressure switch for trane xr90
    Where is the pressure switch on trane xr90? Blinks 3 times and is not blocked or inducer problem.
    JonesHVAC's Avatar
    JonesHVAC Posts: 173, Reputation: 12
    Junior Member
     
    #2

    Oct 16, 2011, 08:44 PM
    What is the chain of events when the stat calls for heat? Ex: inducer (exhaust) motor comes on, igniter comes on... etc. Tell me where it stops if possible please. Thank you.
    jeb1029's Avatar
    jeb1029 Posts: 2, Reputation: 1
    New Member
     
    #3

    Oct 17, 2011, 08:35 AM
    The motor starts running for 30 seconds then shuts off. Then tries again. Today heat is working. Very strange! Bewildered.

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