I got a sudden problem with the filament feed.
Yesterday, everything was fine but today, I have a strange feeding problem. Even with the prints that worked yesterday.
At the beginning the printer is feeding filament. After a short time (20s) it’s not feeding anymore.
But if I use the Move axis command in the extruder, everything works fine. What could be the reason for this?
Hi
I think I may have a similar problem.
I can load filament, but it does not extrude any filament through the nozzle in the feeding process.
If I start a print, it prints normal for like 30 seconds, then there is no filament coming out of the nozzle.
When I feed manually the printing works, but I don’t want to stand besides my printer for several hours. 
Regards
Most commonly this is a problem with the small PTFE tube either being to long or being to short. When you gently disassemble the printhead you should be able to see what problem you are having.