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"Nozzle Cleaning Failed." Error  

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Steve
(@steve-4)
Estimable Member
RE: "Nozzle Cleaning Failed." Error

The latest firmware seems to have cured the problem.

Senior Life member of IEEE.

Posted : 23/04/2024 11:34 am
Juraj25
(@juraj25)
Active Member
RE: "Nozzle Cleaning Failed." Error

Latest firmware 6.0.0 brings me this error. Had to downgrade, now everything works.

4+ years experience with Prusa printers,20+ Printers in company, Mk3, Mk4, XL, SL1S

Posted : 23/04/2024 12:49 pm
Ckobar
(@ckobar)
Trusted Member
RE: "Nozzle Cleaning Failed." Error

I had that problem too.

I thought i had the thumbscrews tight. But fiddeling around i found that the Nozzle had to pushed firmly upwards and than tightening the thumbscrews well. 

But after that, i still could move the heaterblock.  So tightening the nozzle again, than tightening the thumbscrewws  solved the problem in my case.

Somehow this little movement seems to be one possibility which can cause the error. 

Posted : 24/04/2024 9:32 am
dreadengineer
(@dreadengineer)
Member
RE: "Nozzle Cleaning Failed." Error

On the Prusa XL, the 6.0 RC3 firmware had a bug in load cell code that caused nozzle cleaning failure and bed leveling failure. Upgrading to the recent 6.0.0 release (24 Apr 2024) fixed it for me.

I think the error message is misleading; my guess is the "nozzle cleaning failure" is because the load cell is triggering at inconsistent z heights (which the firmware assumes is caused by dirt on the nozzle, but could actually be caused by other load cell problems).

Posted : 25/04/2024 8:20 am
jaschanarveson
(@jaschanarveson)
Active Member
RE: "Nozzle Cleaning Failed." Error

I have a mk4 that has started doing this, too – sometimes unloading and re-loading the filament helps, but I'm wondering if there's a deeper problem developing with the load cell?  In the test I had to "tap" fairly forcefully to get a pass on the load-cell test, whereas all the other mk4 printers in my school just need a quick tap for that test.  

Has anyone else definitively traced their problems down to the load cell?  I guess replacing it is the only thing to do in that case?

-j-

Posted : 02/05/2024 8:14 pm
Mezzauk
(@mezzauk)
Eminent Member
RE: "Nozzle Cleaning Failed." Error

This issue has just hit my printer.  I haven't printed for 2 weeks and also updated to 6.0.0 awaiting delivery of my MMU3. All set to print but cannot get around this error - i have cleaned nozzle, bed tightened lovecell, used different filament and no luck. Anyone have any other tricks?

Posted : 03/05/2024 6:29 pm
Mezzauk
(@mezzauk)
Eminent Member
RE: "Nozzle Cleaning Failed." Error

Sigh, should have checked Github. Downgraded firmware and back to printing.

Posted : 03/05/2024 6:50 pm
Steve
(@steve-4)
Estimable Member
RE: "Nozzle Cleaning Failed." Error

I had no issues with the previous release of firmware.  Has this problem been reported on the Github page?

Senior Life member of IEEE.

Posted : 03/05/2024 7:05 pm
jaschanarveson
(@jaschanarveson)
Active Member
RE: "Nozzle Cleaning Failed." Error

Update: I just needed to re-tighten the screws holding the hotend in place - they'd gotten loose and the hotend was lower than it was supposed to be.  Phew!

Posted : 03/05/2024 7:14 pm
Mezzauk
(@mezzauk)
Eminent Member
RE: "Nozzle Cleaning Failed." Error

Hi, yes - BFW-5406] [BUG] Nozzle Cleaning Error with 6.0.0 #3818. I've downgraded and pre-print tests completed and now printing my MMU. God knows what I do when it's built!

Posted : 03/05/2024 7:26 pm
Scott
(@scott-22)
Member
RE: "Nozzle Cleaning Failed." Error

Is there any way to get a copy of the firmware with the nozzle cleaning removed?  I have been working with support for hours and getting nothing but failed prints no matter what I try.  Thanks,

Posted : 06/05/2024 4:21 am
avguru35 liked
MasterHead
(@masterhead)
Trusted Member
RE: "Nozzle Cleaning Failed." Error

I'm getting this error too... loading and unloading the filament doesn't work in my case, the only work around i've found is turning off and on the printer, this way at least the first print works as expected ... but no idea how many print until it shows its  face again...

i've also checked everything was ok .. no residues or whatsover, no humidity (it's coming from dryer Sunlu S2), ambient temperature 30º... havent find any issue that could justify the "nozzle cleaning failed" error... 

Posted : 13/05/2024 11:31 am
Juraj25
(@juraj25)
Active Member
RE:

FIRMWARE DOWNGRADE SOLUTION

Copy it to the USB drive (make sure it is FAT32)

Insert the drive into the printer (turned off or running)

Turn on or restart the printer, upon the boot double press the knob.

Wait for a few seconds, screen informing you about flashing the firmware will appear.

Flash the FW.

 

Note: If the screen of flashing does not show, you have to restart and double press knob again. For me it works on third try.

Note2: Touch screen works for me with dowgrade to 5.1.3 😀

 

https://help.prusa3d.com/downloads/mk4/firmware

 

This post was modified 5 days ago 2 times by Juraj25

4+ years experience with Prusa printers,20+ Printers in company, Mk3, Mk4, XL, SL1S

Posted : 13/05/2024 11:34 am
MasterHead
(@masterhead)
Trusted Member
RE: "Nozzle Cleaning Failed." Error

Thanks! I'm doing some test in order to find some pattern than could help but it's getting worse so if nothing chages i'll have to downgrade ...

I started having problems using texture sheet, usually i have smooth one, but i doubt it's related... i'll try it it happens with the smooth one either

Posted : 13/05/2024 2:13 pm
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