K8800 always crash while printing


Hi Support team,

Thanks for your advise, When I check the calibration with the check Center, the printhead is not reaching the print surface at 0
What should I do to it,


My printer had been doing something similar when I had the endstops mounted too high on the vertical beams. I am curious if this is a calibration problem, as I think there may be a bug in the Marlin firmware.

Could you try an experiment? Using Repetier (or equivalent) could you connect to the printer and issue a M503 command, then post the output back here? M503 will generate several lines of console output that will indicate exactly how the calibration worked out. This could provide some clues about what is happening.