MMU2s worked, now flashes all orange every few changes.
 
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MMU2s worked, now flashes all orange every few changes.  

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thedevilsjester
(@thedevilsjester)
Eminent Member
MMU2s worked, now flashes all orange every few changes.

I have recently been working on trying to get my MMU2s to work, and I managed to get a pretty nice four color (9 hour) print completed perfectly with zero interventions.

However on my next print, the MMU2s stopped working.  By "stop working" I mean that after a few filament changes it will flash all orange lights and not respond to any normal button presses.  Pushing in the reset button, without doing anything else, causes it to work again for another handful of changes; until it flashes all orange again. 

I have tried aborting the print and starting over multiple times; but its always the same.  For what its worth, it doesn't look like there is any issue with the filament paths (resetting the MMU2s causes it to continue as if nothing happened, with no problems loading/unloading, although sometimes it forgets what color its on)

I am running the latest firmware on both the printer and MMU2s as of a few days ago (the same firmware that the previous print worked fine with).  I have a few more things I am going to try; but I thought I would post here and see if anyone had any idea what might be happening, or troubleshooting steps I might take.

Posted : 26/12/2020 4:50 am
thedevilsjester
(@thedevilsjester)
Eminent Member
Topic starter answered:
RE: MMU2s worked, now flashes all orange every few changes.

I realized that there _was_ something different between when I printed the first (successful) part and when I printed the second (failed) part, and that was the slicer version.

I sliced the first one with 2.2.0 and the second one with 2.3.0-beta2.

In an attempt to reduce the variables, I sliced the second part with 2.2.0, and while it hasn't completed yet (its a ~30 hour print) its been a few hours without the issue appearing again (typically it would happen every 10 mins or so).

This isn't definitive by any means (it could be some other setting that happened to be different, like wipe-to-infill) and 2.3.0 isn't a stable release yet, so I will keep trying; but if anyone has any ideas, please let me know.

Posted : 26/12/2020 7:04 pm
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