Trane XL 80 Blower will not shut down after heating cycle is complete


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Old 10-07-10, 03:56 PM
K
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Trane XL 80 Blower will not shut down after heating cycle is complete

Our Trane XL 80 blower will not shut down after a heating cycle. The furnace works fine until after the desired warming temp is reached at which point the blower will not cycle off. We have tried shutting down the unit at the thermostat by moving to the off position but that has no effect. To get the unit to shut-down I have to go to the basement and shut-off the breaker power. When we do this, the blower remains off until the next heat cycle. We keep the temp in the 68 degree range. I would appreciate any guidance. Thanks,
 
  #2  
Old 10-08-10, 07:00 AM
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There could be a problem with the fan relay on the control board.
 
 

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