Which doesn't solve the 'Why doesn't the preheat command work?' question.... but will at least get you printing :smile:
Thanks. I tried just clicking print and it raised the bed to home position and stopped. I waited but the temp didn't rise, which is
weird as my UM arrived with printed items on the bed. Hope it's not a wire loose as I wouldn't know where to start lol
Paul
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illuminarti 18
Hi Paul!! Welcome to the forum! (Nice to see another Brit on the forum - I'm from Nottingham, but live in the US now.)
You should be able to preheat your nozzle by selecting 'Preheat PLA' from the Prepare Menu. I presume that's what you're selecting, so it's a bit odd that it isn't working. (Although I think there's another place that appears in the menu structure (under Control -> Temperature) - but thats for tweaking the settings for the preheat, not actually making it happen).
The chances are that the gcode for the test objects already includes the necessary commands to heat up the head. (You could try looking at the files on your computer - check for an M109 command somewhere near the start. If so, then you don't need to preheat... and worst case, the printer should refuse to try and extrude if the head isn't hot, so you shouldn't hurt things if you just try to print some of the files. The Ulticontroller should display a 'Heating' message... and the temp display should show 25/xxx (where xxx is whatever the chose temp is for the file, and the 25 part should start rising as the head heats up). Heating to print temp generally takes about 2 mins. Once it reaches temp, the print will start.
Which doesn't solve the 'Why doesn't the preheat command work?' question.... but will at least get you printing :-)
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