K2 Pro - So many errors, I don't know where to start

Flagship K Series Creality Flagship K2 Pro & K2
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Update on my two K2 Pro printers.

Both were purchased on Ebay both seller said “Official Creality Store”, I found out one printer (#1) is a Creality direct sale and the other printer (#2) was sold by a company owned by a Creality company but is required to service printers they sold.

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The printer sold by the reseller (#1): 1 month later, I was told I needed to replace the Y-axis motor. The motor arrived on 7/28. The next day I watched the video for replacing the motor. The motor is attached to a bracket with tensioning wheels. The video made it look fairly easy to change out the motor. I got to the point of sliding the gear/shaft of the motor under the bracket it is attached to. In the video it came out easy. I tried different ways of twisting, different angles, nothing worked. I went back and noticed the printer they had was different. The video had a fan below the motor with only 1/3 of the fan was directly below it. Looked at my printer and it has a shroud sticking out directly under the motor and completely covering the motor.

The “L” shaped bracket has screws on two sides of the printer in the corner. One set of screws are under the glued in side glass. The shroud has no screws to take it off and is either molded into the backboard of the printer.

Video printer

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My Printer

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I contacted CS@creality and after a few days I received this email:

Thank you for your waiting.

Based on the video, do you think it’s possible to replace the Y-axis motor assembly by removing the upper shell?

You can refer to the tutorial to see if this is possible:

https://wiki.creality.com/en/k2-flagship-series/k2-plus/replace-idler-wheel

Go to the WIKI page, it’s almost humorous.

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Printer (#2 )

There was an issue with the hot end and extruder. I went through the extruder cleaning up any filament. Now it can print. Why I got so many errors, I have no clue.

The CFS isn’t recognized by the printer. More were shipped and waiting for them. The CFS system has a problem with removing one of the cables between the printer and CFS while the printer is on. With all of the troubleshooting, I probably pull the cable while it was on. Hopefully the parts coming will solve that problem.

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Of the all of the problems with the 2 printers, I have 50% of one printer solved with more parts arriving in 2 day and the other is in the same state it was a month a go, an expensive boat anchor.

23

I have been printing for 10 months and up to 55 days print time. Gone through some reliability episodes but learning the tricks.

1 tip . Change all the Tube to 2.0ID between the CFS/HUB/Head it’s reduced drag on mine to resolve feed issues most of the time and make the CFS sound healthier.

in 10 months I have realy only replaced a pair of drive gears and the tube. I did replace a hot end but it did not realy need. it..

One other thing i found was upping the temp on PETG to 255 resolved second layer failuer on large prints ( seems to be a common issue ).

1 Like
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Thanks, this is a good thing to try. I’ve heard people have problems with the print stopped due to the printer sensing drag form the filament needing more pressure to pull it through and/or friction with the tube rubbing on the glass top.

I did the same for PETG with 255 temp. I haven’t had a single problem 255 temp and using the routine wash the plate, wipe on 91% Iso Alcohol, and applying Elmers glue stick. I’m printing 50 parts on each plate and if I don’t do this method, 3 or 4 will not stick on the outside rows and ending up skipping those parts.

I received a new CFS mainboard, ribbon cable, and connector board for the CFS cables from Creality Support. Got it all installed, turned on the printer………..still dead.

At one point I told Cr Support I hooked up the other CFS I have and had the same problem, dead CFS.

I would think the problem has to come from the printer. Hopefully hope I get a response Monday.

Thanks for sharing your tips.

Jay

25

Similar here.

Two K2 Combos, both bricked.

The general picture was the same. I started getting more errors than I’ve ever seen. The errors were jams, cutter issues, extruder issues, no network. no firmware update menu, etc.

I fed everything to AI, and it said Creality was addressing the issue with a new motherboard. So, I put in a ticket and uploaded a pile of videos and pics.

Waiting for 2 mobos.

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Were they bricked right away or did it happen later? Mine happened after a week or two. I have one printing now but CFS isn’t working yet. More parts are coming.

Creality support wanted me to replace the Y-axis on the second one but there wasn’t a way to remove it without removing 75% of the printer parts. I demanded a refund or replacement. I’m shipping this one back (at their cost) and getting a full refund.

How long have you had yours?

J

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I’ve had one almost a year and the other about 5 months. Both had the same issues.

It started a couple weeks before the issues hit. And they hit the same way, starting with way more errors than normal, Then all of the links to updating firmware were gone from the K2 screen.

Another issue was the network disappeared.

AI said 1.1.67 was the cause.

My K2’s are awaiting motherboards, hopefully.

EDIT: Note that I started debugging the first errors with AI. It took me down a (VERY LONG) logical path of testing, and after significant troubleshooting, AI came back with the motherboard replacement suggestion and said Creality has solved the same problem this way.

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I hope the Mboards take care of the problems.

The printer with CFS problems were fixed. I’ve used the other printer for parts and removed the small board on the back of the printer with the 486 connector on it. I swapped out the board and it worked.

The printer I’m taking/swapping the parts with is the one being shipped back and doesn’t work. Creality is shipping the new part but I’m glad I could test/use the other printers parts.

J

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It feels like it took a week to hit everything. Not sure when things went away, but it feels like something progressive.

I noticed the first signs when the K2s couldn’t connect. It could have started then, I guess.

30

My working K2 updated the firmware to 1.1.6.7 yesterday. I’m running a big print and at this point it’s ok.

Both my printers died one day apart. They were both on 1.1.6.3. I had so many error codes of all kinds.

I couldn’t wait for creality to get things straightened out and bought a Bambu H2D. It’s good but not as fast as the K2. I would rather have a Creality with the more open system but I have a client needing a large number of parts every week. I have older Ender 3’s, v2, S1, and Max with Sonic. pad. To be honest, I kind of like the older ones being able to easily figure out if something goes wrong. These new ones are so complex it’s hard to troubleshoot.

When are your mboards supposed arrive?

1 Like
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Couldn´t agree more. Random errors all the time. ALL the time. I have owned my K2 Pro in about three month and allready changed the extruder - beside all the consumables as cutter, wipers, filter etcetera.

Now I will try to replace the filament detector again (came a new one with the new extruder). The next step is to replace the Hotend Circuit Board - but that require me to dismantle the entire machine. I am not a mechanic.

This is getting stupid. I wish I had bought a Bambu Lab instead. Their users seems to have less problems (according to the forums).

I can add that I have contacted the support (cs@…) with no luck. I am about to give up.

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Stay on them and press for a refund. Keep notes and demand a refund.

I did and finally got it.