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trane xe 80 help please

  1. HVAC
    I have tried all of the instructions on the front of the furnace about turning the thermostat down, turning off the furnace, waiting 5 minutes and then restarting. The furnace still only blows cold air. Help. :(
  2. HVAC
    Hi I have a Trane XE80 that I'm trying to fix. LED on the control board flashes 4 times indicating a Hi Limit switch open. Where is the hi limit switch? I've metered all of the sensors that I could find and nothing shows open. Does anyone have a part number for the switch? Blower comes on...
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