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  1. #1
    Machine Gunner bellavite1's Avatar
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    Quote Originally Posted by bryjcom View Post
    Sounds like you maybe lost a ground to the common side of the transformer. The behavior you describe sounds like a dirty flames sensor but since you've cleaned it, it probably isn't that. I've seen a faulty wiring harness cause the same issue. I've also seen a customer change out a transformer and not ground the common which caused the issue.

    Run a wire from the C terminal on the board to a screw holding the board assembly to the furnace.

    Ace hardware will most likely NOT have a flame sensor.
    You lost me at the C terminal...Which one is it?
    Are we talking about where the thermostat wires go in?
    That's the only place where I see a C marked on the board.
    Or by C terminal we are talking about the neutral strip on the left of the board (thermostat wires being up).
    Last edited by bellavite1; 01-11-2023 at 08:17.
    NIL DIFFICILE VOLENTI

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