I've had an Ender 5 for about a year without problems. But just recently, the printer is not lifting the Z-axis before printing. It will home great but when it moves to print the purge line it lifts the bed down about 2-3 millimeters and the nozzle is not even close to touching the bed anymore.
I've checked the starting G-code in Cura and it all looks fine but I'm still having problems.
Current Start G-code:
M201 X500.00 Y500.00 Z100.00 E5000.00 ;Setup machine max acceleration M203 X500.00 Y500.00 Z10.00 E50.00 ;Setup machine max feedrate M204 P500.00 R1000.00 T500.00 ;Setup Print/Retract/Travel acceleration M205 X8.00 Y8.00 Z0.40 E5.00 ;Setup Jerk M220 S100 ;Reset Feedrate M221 S100 ;Reset Flowrate G28 ;Home G92 E0 ;Reset Extruder G1 Z2.0 F3000 ;Move Z Axis up G1 X10.1 Y20 Z0.28 F5000.0 ;Move to start position G1 X10.1 Y200.0 Z0.20 F1500.0 E15 ;Draw the first line G1 X10.4 Y200.0 Z0.20 F5000.0 ;Move to side a little G1 X10.4 Y20 Z0.20 F1500.0 E30 ;Draw the second line G92 E0 ;Reset Extruder G1 Z2.0 F3000 ;Move Z Axis up M503