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How do you access the flame sensor on the Trane XE90 furnace? It seems to be in the burner section, but I'm not sure how to get in there. My furnace begins its start-up process, but then clicks off before fully igniting. It sounds like it could likely be a dirty sensor, but I am not sure how to get to it to clean it.
Make : Trane Model : XE90Already Tried: I have shut down the furnace and gone through the start-up procedure. The burners light and the blower is running, but the furnace fails to fully ignite. I found the sensor wire, but do not know how to access the sensor itself. Can't find an external access point on the burner section.
Model # TUX060C936C1
The cover sometimes is hard to get loose. You will have to work a small screwdriver under cover and gently pry loose bottom. Russ