Any idea what is causing this error on my Duplicator 4S?
Sounds like a stepper motor driver has gone, faulty and it looks like x & y are moving but Z isn't. Try from the control panel to use jog mode on all 3 axes and you will see which is failing to move.
Stepper drivers are plugin modules so can be changed easily, an example to but is here:https://www.reprap.me/wanhao-stepper-motor-driver-d4-4x-4s.html
Thank you :) problem was that in jog mode, i didn't always get the error. But in the end i did, so thanks, i got it fixed replacing a cable til the X axis motor. :-)
Had this problem a couple of months ago. Had to change the cable to the motherboard. It's a pain in the ass, and I had to do both the power and data cables, since one failed right after the other.
Yes, it was the cable to the X axis. One of the four wires was broken, and i just replaced the broken one, and it prints better now i think.
It was kindda loud before, both with the bad noise the x stepper made, but also the "Data talk" sound is much lower now.