Trane XE90 Won't stay lit

Discussion in 'HVAC' started by nifaron, Nov 16, 2008.

  1. Nov 16, 2008 #1

    nifaron

    nifaron

    nifaron

    New Member

    Joined:
    Nov 16, 2008
    Messages:
    2
    Likes Received:
    0
    I have a Trane XE90 with a problem. The LED flashes like normal when it gets a call for heat, the glow plug warms up, the gas relay opens, gas flows to the burners, the burners light for a couple seconds then turn off. I've replaced the flame sensor and installed a refurbished control board thus far - still same problem. Any ideas? Thanks!
     
  2. Nov 16, 2008 #2

    glennjanie

    glennjanie

    glennjanie

    Well-Known Member

    Joined:
    Mar 1, 2006
    Messages:
    2,990
    Likes Received:
    4
    Welcome Nifaron:
    Make sure the vent pipe is clear and clean the heat exchanger tubes. The furnace shuts down if there is a back-pressure on the vent. If it has already worked for several years, it has to be something that changed to affect it. Maybe a bird's nest in the end of the vent?
    Glenn
     
  3. Nov 16, 2008 #3

    nifaron

    nifaron

    nifaron

    New Member

    Joined:
    Nov 16, 2008
    Messages:
    2
    Likes Received:
    0
    Would I be able to test that by disconnecting the vacuum hose? In my earlier testing I disconnected it with the same result. In any case, I'll go to the basement and start looking at the vent.

    Thanks much!
    Aaron
     

Share This Page