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Koflach · 02-11-2015, 10:33 PM

We have a Trane XB80 that was last serviced about a year ago and needed the blower (i think) replaced. Since then it has been working like a champ but today we noticed that the furnace was continuously running. I checked the vents and they are blowing cool air. I went to the thermostat (Honeywell RTH8500D) and the heat wasn't turned on but after turning up the temp the heat kicked in. after this I turned the thermostat off but the furnace continues to run.

Since this I have replaced the air filter and turned the furnace off at the fuse box for about 30 minutes yet it still is running.

So, any thoughts? Should I just call a service tech or do any of you have any suggestions on how I can trouble shoot this? Thanks in advance.

02-11-2015, 10:33 PM	#1
Koflach I contribute to threads in the offtopic forum Join Date: Jan 2004 Location: New West Posts: 2,849 Thanked 720 Times in 252 Posts Failed 222 Times in 38 Posts Member's Picture Albums	Furnace Question We have a Trane XB80 that was last serviced about a year ago and needed the blower (i think) replaced. Since then it has been working like a champ but today we noticed that the furnace was continuously running. I checked the vents and they are blowing cool air. I went to the thermostat (Honeywell RTH8500D) and the heat wasn't turned on but after turning up the temp the heat kicked in. after this I turned the thermostat off but the furnace continues to run. Since this I have replaced the air filter and turned the furnace off at the fuse box for about 30 minutes yet it still is running. So, any thoughts? Should I just call a service tech or do any of you have any suggestions on how I can trouble shoot this? Thanks in advance.