Z-axis won't move while printing

[printilicious]

Hello,

I am new in the world of 3-D printing.
I installeed everything so far right and while not printing the z-axis is functioning very good and smooth. Only while printing the printerhead is not moving any layer upwards but still ejecting filament.

It is also strange that when I print a gcode file from SD with certain settings, after the printer heated the nozzle he jumps back to normal settings (e.g. from 220° to 200°) and the speed always shows something like 100%6 or 60%48. I don't really know what the number after it means.

I already tried Cura with different profiles (and after connecting printer via usb) but always the same result.
My version is V1.39.56

Please help me out, I really don't know what to do

[printilicious]

Does anyone have the example g code files of the sd card? And something to add, I can't directly print via USB. The printer won't respond :/

[printilicious]

This is a video of my problem:
https://sendvid.com/zzv2fsd5

[_kaktus_]

Hello.


The video shows that printing starts when the print head is too high.

[Gingko]

1, Temperature drops from 215/220 to 200, maybe you set the print temperature is different from the first layer temperature.
2, Nozzle looks too high that filament cannot be sticked to the bed.

nozzle height.jpg (200.13 KiB) Viewed 8832 times

[_kaktus_]

The applause of Gingko.