MK3S+ printing fan not working - cannot complete first layer calibration

MK3S+ printing fan not working - cannot complete first layer calibration  

New Member

Hi everyone, I have a MK3S+, I managed to get some (like 3 or 4) prints and then I had a bad clog. I changed ptfe tube and cleaned up the bondtechs, other than that everything looked fine. Now i'm not able to finish the first layer leveling test: the printing fan does not start and the filament does not stick to the bed but adds up on the nozzle till it clogs (actually I stop before that happens). I tried with bot pla and petg, but the "front fan" does not start at all during this (while I don't recall if it did before). So I think the problem is this, but from the menu i can get that fan to spin, so it is not an electrical problem.. I just flashed last firmware 3.9.3 and tried again, but the problem remains.

Any suggestions??

Posted : 08/05/2021 10:13 am
Famed Member

For standard pla profiles the part fan is not usually turned on until the second layer, for petg profiles its off for the first 3 layers normally.

Not sticking to the bed is down to either first layer z height adjustment or bed cleanliness.  There are 1001 threads on here about how to correctly clean your print sheet and adjust the first layer correctly.

Posted : 08/05/2021 10:21 am
Honorable Member

Pg1 then pg40 for Joans Pictures.

Should be made to read this thread on joining. 😁  not all 40 pages mind you

Tank you very much!...
Posted : 08/05/2021 10:26 am

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