Geeetech

A20T

Hi，I think you should first check whether the stopper is completely normal, you can refer to:
http://geeetech.com/forum/viewtopic.php?f=17&t=60927

so, yes, this seem to be the problem. it's state is open all the time.
But I can't find the end stop for the A20T on the Geeetech page. They only sell the bigger red one. Where can I find this part ?

actually the problem is even more strange.
I switched places of the end stop switch with the one of the Y axis. It turned out to work fine.

Then I switched the Y Axis end stop board-connection with the Z Axis end stop board-connection. It turned out that then the Y axis is lit all the time and doesn't trigger anymore. The problem seem to be on the board.

The problem seems to be a faulty pin. Where can I find the h-Files for the firmware ?

Hi, do you mean that after the good stop is replaced, the Z-axis still cannot stop?

yes exactly.

Hi，try to remove the limit switch, it may be that the limit switch has prevented the 3Dtouch from reaching the leveled position.