Yesterday, out of the blue my A1 printer fired this error as it was preparing to print a model.
I checked the printer and the filament was indeed broken inside the AMS Lite ptfe tube. This has happened before and I fixed it by pulling the broken filament and feeding the spool again.
However, this time the error kept showing up.
I thought maybe the nozzle is blocked. While heated I cleaned it using the wire tool in the box but that didn’t work. I then pushed the filament from the top and it cleared whatever was blocking it. A straight line was extruded
I started a print and while printing the first layer, it came back to the purge position and fired the same error. I disabled “clump detection” thinking maybe it’s the culprit. It’s the only thing that I changed since the last successful print.
I manually pushed a new color (Slot2) until the printer purged the older color (Slot1). I started the print choosing Slot2 as the color of choice and it printed fine until it reached 99% and went back to the purge position and fired the same error.
The next print, the printer refused to print until I manually extruded some filament and then started the print.
It printed fine, all the way to 99% and fired the same error.
I believe that both prints were done, but maybe that 1% is where the printer cuts the filament and retracts it?
Why is this happening if the printer is clearly printing and the nozzle is NOT blocked?
Cheers