Nozzle crashes

  • I am a novise in D-printing.

    The nozzle of my Creality CR 10s Pro crashes into the bed and I don’t know how to solve the problem.
    I have tried different things:
    Whilst printer off I winded the two large threaded lugs at the base of the two threaded z shafts so the heads sits up quite high. Then powered up and redid cal, trying to make the print head higher than it thinks it is. Unfortunately it didn’t work
    I also turned the screw on the sensor clockwise in order to raise the point where the sensor reacts.
    When trying to level the bed the nozzle goes to the middle. Lower twice just above the bed, the third time it crashes into the bed. Even though the ledlight is on.
    Any help is welcome!
    Best regards

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