So running a 2 day multi extruder job (factory assembled 5T) and getting filament changes on white PLA
I am running a very large print over 2 days and the majority of the model is white PLA, and now on 2 different brands I have heard the printer beeping after multiple layers and found it acting like a filament change. I looked in the gcode and there are no M600s in there with no reason for there to be. The filament is not clogged and the unload and reload works fine (I just pull back 2cm and then once it asks slide it back until it beeps. and it has no problem extruding. It normally prints fine on other colors so wondering if there is some weirdness with white (yes I know you often need to print warmer with white due to the TiOx flakes but the fact that it flows fine even after it reloads (and no chew marks on the filament like in the old days where the extruder failed to push forward).
RE: So running a 2 day multi extruder job (factory assembled 5T) and getting filament changes on white PLA
Sounds like one or more of the filament sensors on the tool with your white PLA is on the fritz and thinking it ran out of filament when it actually didn't.
They're a bit of work to extract for a better diag. So if you know you have enough filament on the spool to not really need the sensor, then I'd just disable them.
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RE: So running a 2 day multi extruder job (factory assembled 5T) and getting filament changes on white PLA
So weirdly I switched to a different spool of white, and it went all the way through. Which is odd given the filament sensor shouldn't care I assume about the filament being slightly wet or something?
RE:
I had the same issue. By the end I found out that the side filament sensor was delivering wrong values.
You can check the values during printing and see if they fluctuate too much. When they fluctuate so much that the printer thinks the the filament did run out, it initiates a filament change.
I suggest you to take off the side filament sensor and clean it according to the article in the knowlege base: https://help.prusa3d.com/guide/how-to-clean-the-side-filament-sensor-xl_547477
Don't forget to calibrate the side filament sensor after putting it back on.
If the problem persists, you will have to replace the side filament sensor. This solved the issue for me.