I am having a problem with my Vertex K8400 3D-printer for a while. Sometimes it just refuses to move it’s z-axis upwards. When I select control printer > move axis and then try to move the z-axis up, it moves downwards. When I try to move it downwards, it also goes downwards.
The same occurs when I try to start printing: when calibrating, it moves all the way down (where it normally moves up towards the nozzle) until it jams and I have to stop it.
This problem occured a few times earlier, but when I restarted and resetted it a few times, it would resolve itself. But now, even after restarting and resetting several times, it won’t go up.
Does anyone know this problem and/or have a solution for it?
Thanks in advance.