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I've been trying to print my final Christmas kit card and it's not going so well. It was an 11 hour print and it failed at 9.5 hours. I think one of the walls was too thin and it collapsed. So I increased the size about 20 percent to beef everything up a bit which made it into a 14 hour print. It failed again at about the 12 hour mark. Some error about the print nozzle temperature being abnormal. I have followed all the troubleshooting and repair steps a dozen times and nothing is having any effect at all. I have ordered a new complete print head and it's going to take a week to get here. I also opened a support ticket to see what they can do to help me. I've seen this problem on a few different posts and there seems to be no consensus on what the actual problem is or how to fix it. It seems different things have worked for different people but in some cases it seems that nothing works. I'm pretty bummed out.

I've been trying to print my final Christmas kit card and it's not going so well. It was an 11 hour print and it failed at 9.5 hours. I think one of the walls was too thin and it collapsed. So I increased the size about 20 percent to beef everything up a bit which made it into a 14 hour print. It failed again at about the 12 hour mark. Some error about the print nozzle temperature being abnormal. I have followed all the troubleshooting and repair steps a dozen times and nothing is having any effect at all. I have ordered a new complete print head and it's going to take a week to get here. I also opened a support ticket to see what they can do to help me. I've seen this problem on a few different posts and there seems to be no consensus on what the actual problem is or how to fix it. It seems different things have worked for different people but in some cases it seems that nothing works. I'm pretty bummed out.
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[–] • 3 pts

I don't know how your printer works. Mine is re-flashed with the Marlin firmware.

Have you tried to go through a PID tuning step? I was having a ton of over-heat issues and eventually had to replace both my temp probe as well as the thermal element. After which I did about 6-7 cycles of pid tuning and updated the firmware with the values and now I can complete a 20-ish hour print again without issues. Before it would fail randomly between 1 hour and 10 hours.

I also have my printer plugged into a cheap UPS as a power line conditioner, I found a strange case where if The washer/dryer was running at the same time the bathroom fan kicked in and the printer was in motion it could cause a large enough voltage drop/spike that it would cause the firmware to register a fault and stop the print. Moved the printer to a different circuit and added the cheap UPS and no more problems like that.

[–] • 2 pts

I don't even know what a PID tuning step is,,, lol, so, no, haven't done that!! I am on the latest firmware though and tried That is an interesting thing about your power issue. Heck of a catch on the bath fan!!

[–] • 1 pt

I don't know if your printer supports directly sending gcode or has a pid tuning function. I use octoprint with my setup and marlin firmware. This explains the process some.

https://all3dp.com/2/3d-printer-pid-tuning/