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Trane XB80 fan problem
On my XB80 furnace, my circulating fan does not come on. I just replaced the bad capacitor, and it runs fine manually. It won't come on with the board controlling it. I have cleaned the flame sensor, new board last year, tested multiple leads for continuity, and check board for output on fan terminal. No power at fan terminal after the relay clicks. The inducer comes on fine, the flame ignites fine, but then it kicks out on high limit when it over heats because the fan does not come on. Any ideas. I don't know what is supposed to signal the board to turn the fan on, but with the relay clicking, I would think that the signal was sent.
Thank you Bob |
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