BLTouch install problems Ender 3 pro

  • I have installed the wiring for the BLTouch (SMART V 3.1) on the board (4.2.2) and flashed it with SD card (Ender-3 Pro- Marlin2.0.1 - V1.1.2 - ALT.bin(without Adapter board)). Now the BLTouch name is in the menu on the 3d printer but the auto-leveling doesn't work. It is working on the x and y-axis but not z. z axis only goes up and not down.
    Any ideas?

  • hi,@corsix Please check whether the bl-touch wiring is is in reverse. If the issue still exists, you can send an email to and attach a video in details. There will be the professional to help you.

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