crashing the x axis

[RichTech 0]

My machine "Ultimaker 2" doesn't seem to know where the head is if I abort or even change material.

Once I abort or pause and restart, the machine proceeds to over shoot in the x axis.

[gr5 1,107]

Did you push/move the head while it was paused?

If you abort, then it has to re-home again before it knows where it is.

Is the print head smashing loudly into the left wall? If so there's something wrong with the limit switch - it's probably not quite making contact. With power off try to push it so that you can hear the click of the limit switch when the head is all the way over to the left. You might have to bend the metal tab on the switch a little or maybe the fan shroud is bent and the fans are hitting the wall before the limit switch is hit.