Print won't start - "Heating Bed" in LCD

Vertex 3D Printer Vertex - Assembly and user manual
1

I did not find a solution for this in other discussions; maybe this will help others who get this problem.

After my first print where I accidentally used Slic3r (with no Vertex optimized configs), I found that the CuraEngine output caused the printer to display “190/0 0/50” and at the bottom “Heating Bed”, and the print never started (the 190 decreases as it cools after loading filament into the extruder). Now I know there is no heated bed, so why this display and why a 0 setpoint for extruder 1? It took me hours to track down, including re-flashing the Vertex Arduino code and re-installing the Vertex Repetier program with no change. It turns out that the CuraEngine slicer generates a bad G-Code statement in the start portion of the code. On line 8 it shows “M190 S50” which means ‘wait for the bed to reach 50 degrees’. When I comment out this line (by putting a ; in front), it works as expected.

In generating the G-Code, CuraEngine uses the statement “(IF_BED)M190 S(BED)” [you can see this in the CuraEngine Configuration]. It looks OK, but somehow the IF_BED is interpreted as True even though it is False. I’m sure when I remove this entire line from the Configuration I won’t have to comment out each G-Code before pressing Print, but I have no idea how to fix the initial problem. For a first-time user this was very distressing, but now I am very happy with the Vertex.

2

You can change the start and end gcode in the slicer settings of Repetier.

Cheers,
Dylan

3

Did you use the Vertex version of Repetier?

4

Yes, I did use the Vertex version. I installed under a user account, supplying the Administrator password when required. I read elsewhere that CuraEngine settings are way off if not installed as Administrator, but other than this G-Code line, my print came out quite good. When the current print is done, I will re-install as Administrator and see if there is a difference.

5

Well, that seems to have fixed the issue, and prints are looking even better than before. If you install under a User account, make sure you install the Repetier Host software AS ADMINISTRATOR, not simply entering the Admin password when prompted. The instruction page still does not state this on http://manuals.velleman.eu/article/7-connecting-the-printer-21.html. Velleman, please make this simple change to avoid continued frustration.
Thanks everyone

6

This is actually NOT SOLVED yet. See the discussion in the Printer Software section.