Trane XL 90 on & off mystery - http://www.hvacmechanic.com/ Forums
Original message
| mborr
 |  "Trane XL 90 on & off mystery"
, posted Thu 23 Oct 19:59  
20 year old Trane XL 90 Super Efficiency furnace in my home. No problems til this fall. When it came on it runs 2 minutes with flame then flame turns off. Then blower stays on a little and then turns off but little fan on furnace stays on. The furnace cycles on and off over and over again. I've replaced filter and made sure vent to furnace is not plugged. Any help would be greatly appreciated. ANY IDEAS????
mitch borr
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Replies:
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| TKG26
| "Re(1):Trane XL 90 on & off mystery" , posted Thu 23 Oct 21:25
dirty flame rod aka flame sensor
SIGNATURE "Always have a licensed HVAC technician perform repairs on your equipments. HVAC is not a do-it-your-self home project."
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