jams in creality hi

Creality Hi Printer
1

Hello everybody. About three months ago, I purchased a Creality Hi Combo printer. For the first three weeks, everything was great; I was happy printing in color without any problems. However, since then, the printer has suffered from periodic jams, about once a week or even more often. The jam was located in the extruder on one occasion and in the nozzle on the majority of occasions. It hasn’t been resolved despite changing the nozzle.

The CFS seems to be fine; it doesn’t appear to have been the cause of the jam, although I have to say that the first jam I had was when using a filament that wasn’t from Creality. But, except for that occasion, I’ve always used Creality HyperPLA filaments, and the jams have persisted.

These jams appear when printing certain models, while they don’t appear with others. I’ve even thought it could be something related to the Creality Print g-code. I’ve also tested the printer printing in a single color and haven’t had any jams.

This printer is the fourth Creality printer I have. I started with the Ender 3 Pro, and continued with the Ender 3 S1 and the Ender 3 V3 KE (and I still use them). And I haven’t had the jamming problems I had with this one with either of them.

Of course, I’ve always used the settings and temperature recommended by Creality.

Any ideas on what’s causing my printer to jam and how to fix them?

Thanks a lot

1 Like
2

Try changing the PTFE tube. Creality HI is using filament tension for jam sensor. is the PTFE tube is not slippery enough…it will trigger the jam sensor.

Does the spool rolls back and forth correctly in the CFS? If not, it also will trigger the jam sensor. In this case you should modify the CFS.

3

creality print (6.2.1.3044)

win10 to printer by usb flash (gcode)

creality hi (1.1.0.48)

cfs1(1.1.3)

cfs2(1.1.3)

cfs3(1.1.3)

cfs4(1.1.3)

(cfs - edit - creality - pla - crpla/crsilk 190° - 240° pressure advance 0.04mm)

problem:

when cfs loading filament by gcode, it feed filament too hard whith no reaction on buffers end switch, so cfs red led blinks twise/sec (motor overcurrent protection indication🤔),

sometimes at this moment cfs feeding wheel make wierd noise and eat filament, then stop printing (printing without filament error), after resuming print, it has lost layers…

if i paused printing and unload/load another color from printer menu (manually, not by gcode), it works perfectly - it feed filament untill buffers endswitch

tryed it on different cfs, the same problem…

4

no problem in tuve, some kind firmware fail, tryen on five cfs, the same - looks like sometimes(randomly) 5way hub bldc motor feed too hard/much ignoring endswitch and stop feed by overcurrent error(red led blinks twise/sec)

cfs use ms8828 3phase driver IC + bldc hall motor + mt6826 encoder under 32f303arm and i think someting goes wrong with firmware because it is all new stuff

max current of 8828 depends of Rsense, in stock it has 2x0.5r in parallel - 0.25r - about 2.5a, by removing one of Rsense max current drops to 1.3a, so it has not enough power to eat filament, it just catch error, but continue print

strange solution, but it works, anyway waiting for answer from creality, i’m sure thay will solve this bug

i tested all endswitches, it’s ok

5

Thank you for your response. I changed the PTFE tube and the printer jammed again. If it could help I attach the photo of the error that gives (TR2863), and when I remove the PTFE tube the filament is always broken as you can see in the pictures I send. The filament comes out without problems and after heating the nozzle the jam can be solved, but when printing again the same problem appears again.

IMG_0930
IMG_09301920×2560 255 KB

IMG_0928
IMG_09281920×2560 238 KB

IMG_0927
IMG_09271920×2560 412 KB

IMG_0926
IMG_0926828×1792 110 KB

Resumen

Este texto estará oculto

1 Like
6

I have also had my fair share of jams and I found the problem to be in the extruder. I had to actually dismantle it and found a small nugget of over cooked filament in the gears. Once removed and reassembled every thing was fine. There is a video on you tube that will guide you through.

1 Like
7

Seems like nozzle heat problem….or nozzle clogging…or gear issue like garrye061 said

8

Creality Community Forum

jams in creality hi

Creality Hi Printer

creality-hi

jams in creality hi

Creality Hi Printer

creality-hi

Comments

**Fat_Bass**Basic

2d

creality print (6.2.1.3044)

win10 to printer by usb flash (gcode)

creality hi (1.1.0.48)

cfs1(1.1.3)

cfs2(1.1.3)

cfs3(1.1.3)

cfs4(1.1.3)

(cfs - edit - creality - pla - crpla/crsilk 190° - 240° pressure advance 0.04mm)

problem:

when cfs loading filament by gcode, it feed filament too hard whith no reaction on buffers end switch, so cfs red led blinks twise/sec (motor overcurrent protection indication🤔),

sometimes at this moment cfs feeding wheel make wierd noise and eat filament, then stop printing (printing without filament error), after resuming print, it has lost layers…

if i paused printing and unload/load another color from printer menu (manually, not by gcode), it works perfectly - it feed filament untill buffers endswitch

tryed it on different cfs, the same problem…

**Fat_Bass**Basic

2d

no problem in tube, some kind firmware fail, tryed on five cfs, the same problem - looks like sometimes(randomly) 5way hub bldc motor feed too hard/much ignoring endswitch and stop feed by overcurrent error(red led blinks twise/sec)

cfs use ms8828 3phase driver IC + bldc hall motor + mt6826 encoder under 32f303arm and i think someting goes wrong with firmware because it is all new stuff

max current of 8828 depends of Rsense, in stock it has 2x0.5r in parallel - 0.25r - about 2.5a, by removing one of Rsense max current drops to 1.3a, so it has not enough power to eat filament, it just catch error, but continue print

strange solution, but it works, anyway waiting for answer from creality, i’m sure thay will solve this bug

i tested all endswitches, it’s ok

9

check for update, use latest

10

ThAnks, I will do it