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    rswank's Avatar
    rswank Posts: 2, Reputation: 2
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    #1

    Oct 18, 2006, 07:31 AM
    LED on Trane XB90 not on
    I have an Trane XB90 furnace and just recently moved the thermostat up a bit on the wall to make room for a light switch. I didn't cut power first and think I touched the stat wires. After hooking the stat back up the furnace would not turn on. I recycled power to the furnace and that did not help. Also, the red LED is NOT on at all on the board. I am thinking the board is fried. If I have power to the furnace and the led is not on at all would there be any other explanation other than a bad board?
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
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    #2

    Oct 18, 2006, 03:40 PM
    Quote Originally Posted by rswank
    I have an Trane XB90 furnace and just recently moved the thermostat up a bit on the wall to make room for a light switch. I didn't cut power first and think I touched the stat wires. After hooking the stat back up the furnace would not turn on. I recycled power to the furnace and that did not help. Also, the red LED is NOT on at all on the board. I am thinking the board is fried. If I have power to the furnace and the led is not on at all would there be any other explanation other than a bad board?
    It is more likely a fuse in the low voltage cicuit in the furnace The fuse can be inline, or on the board. It is also possible you burnt out to transformer.
    rswank's Avatar
    rswank Posts: 2, Reputation: 2
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    #3

    Oct 19, 2006, 06:36 AM
    Quote Originally Posted by NorthernHeat
    It is more likely a fuse in the low voltage cicuit in the furnace The fuse can be inline, or on the board. It is also possible you burnt out to transformer.
    Yep it was a 3amp fuse.
    Thanks!
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