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Controller seems stuck in on position.

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    Controller seems stuck in on position.

    When ever the battery is on my bafang 750W bbs02 takes off when peddles are moving, I have no way to change power level or change to no pass. Trying to program has no effect. Not sure where to go.

    There might be a short in the controller wires, someplace. There are two wires you can connect directly, to operate without a display connected. If same wires are shorted on yours, I guess it would be always on.

    Unplug the display and see if it stops doing this. If so, bad display, probably. If not, perhaps a short in the wiring harness.

    Something to try...good luck.

    Spare harness is available...
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