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-   -   Pressure switch for trane xr90 (https://www.askmehelpdesk.com/showthread.php?t=604381)

  • Oct 16, 2011, 04:55 PM
    jeb1029
    Pressure switch for trane xr90
    Where is the pressure switch on trane xr90? Blinks 3 times and is not blocked or inducer problem.
  • Oct 16, 2011, 08:44 PM
    JonesHVAC
    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.
  • Oct 17, 2011, 08:35 AM
    jeb1029
    The motor starts running for 30 seconds then shuts off. Then tries again. Today heat is working. Very strange! Bewildered.

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