Ahiggs

Alright, so I reseated the white cable in the print head. It did not look loose or under tension but I was able to print a 11 hour part immediately afterwards, so maybe this was our issue. If we continue to have issues, I'll take a look at the relay. Thanks for your help!

Hello, sorry about the delay in response. I have watched exactly what happens when the error occurs. During printing, maybe on the 4th or 5th layer, the extruder will stop moving, feeder motor will stop (I think, didn't hear grinding noises), both print core lights will turn off, but the printer will think that it is still printing. If I select abort print, it will sit there motionless and then display the Z or X/Y limit switch error, presumable because it thinks the extruder/bed is moving and never detects the limit. I checked the cables underneath the printer and everything seemed fully seated. I will check the print head cable tomorrow, haven't done that yet. It's possible that this is loose since I have had to open the head before to clean out a clog. Thank you!

I just received error 18 (communication with print head) when unloading the material from print core 1. I first unloaded material 2 which went without issue. I then tried to unload material 1 which went fine until the head started to move back to home when it was done unloading. The motors just stopped and the error appeared before the head was even close to the limit switch.

Thanks for the quick reply. I will need to check again when it fails, but I am 95% it was 17 once and I think another number a different time. Once the message was for the X-Y axis and once for the Z axis. There are no issues with the limit switches that I have seen. It always homes correctly. I checked the z-switch hole and it was clean. Also, during the most recent print, I managed to walk by the printer before the error occurred. It seemed like something happened during the first layer causing the head to stop moving. The fans were running, but the lights on the print cores were off (not visible in picture). The motors were idle. It almost seems like the printer lost communication to the motors and extruder but thought they were still connected and continued to print. I have updated the printer firmware to the latest version, but Cura is still on 4.4.0

Hello, We have an Ultimaker 3 that is currently being a pain. In the past few months we have printed without issues. Now, it is often displaying the axis is stuck or limit switch is broken error during the middle of a print. It has happened for both the X/Y axis and the Z-axis for numerous different sliced models (Cura 4.4). When the error occurs, the printer stops moving, extrudes a small blob of filament on the print and then shows the error and fails. I have never actually seen what happens before the failure, but it typically occurs during the first few layers of the print I have cleaned and oiled the sliding rods for the extruder. The printer moves smoothly and passes the X-Y motion stress test. The print quality is fine when it manages to print successfully... Any advice? Thank you