Trane XE80 Furnace


  #1  
Old 03-23-10, 09:28 AM
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Trane XE80 Furnace

My trane XE80 will not heat. When I increase the temperature on the thermostat the fan on the furnace kicks on and blows cold/room temp air. The fan continues to run but not heat. I have had this problem the last 4 winters, it usually take the repairman 5 minutes to fix, would really not pay to fix it again.

Any suggestions on what could be wrong? How to fix?
 
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Old 03-23-10, 05:04 PM
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Use an AC voltmeter to determine if the pressure switch is closing.
 
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Old 03-24-10, 04:59 PM
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...or that anything in the safety system is not open. (Pressure switch, roll out switches, limit switch, spill switch on the inducer housing.) Last furnace we had problem with just about 2 weeks ago, did the same thing with only the circulation blower going(even after resetting the furnace), was the 24 volt spill switch on the ventor motor corroded and lost connection, causing the safety circuit to go open.
 
 

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