CFS disaster on K1 Max

Flagship K Series Creality Flagship K1 Max
1

I installed the upgrade kit for the Creality K1 Max to use the CFS and updated the firmware. I should point out that I had previously installed the Unicorn Quick Swap Hotend without any problems, and when I tried to print, I had no problems; the machine printed fine.

But after installing the kit, making all the connections, and inserting the Creality RFID spools into the CFS, I tried to test print with multicolor, but the printer always gives error fb2864, then xs2094, xs2001, xs2294, and xs3000. After this error, the K1 Max light goes out and it doesn’t accept any commands, but you can only turn off the printer.

Since I couldn’t print multicolor, I tried printing with a single filament after turning it off and on again, using an external spool. However, even then, it still wouldn’t let me print. The machine loads the filament properly, extruding, but before starting to print, it displays a message saying the filament is running low, prompting me to forget or reload. I tried both options, even extruding more filament or saying forget, but printing always pauses and the previous message keeps popping up.

I should point out that I’ve checked and rechecked both the assembly and the connections several times, but the machine always behaves the same way.

I made the following videos to demonstrate the abnormal behavior and find a solution to the problem.

2

Ich habe das gleiche Problem und keine Lösung.

3

what about putting the orignal hot-end back in?

4

I solved it by changing the extruder board that Creality sent me

5

Do you also use a K1 Max with a CFS feeder?

Is the old PCB incorrect thats why they sent a new version?

6

I have the same issue, installed a new print head cutter, new tubes, and a new buffer and still get fb2864. Sometimes I get to print 20% and then it starts. I cannot resolve it. It is very frustrating it was working well.

I have two CFS units attached to the K1 Max why did it print OK and suddenly stop and giving wrong error codes. The codes do not match the issue.

When it changes colour, it feeds to the Hot Head. When it enters, the Blue light comes on; however, the CFS unit keeps feeding, then errors occur, and there is a red light on the CFS unit. I have stripped the CFS unit to check if it’s blocked or if the sensor is dirty. Surely, when the Hothead Blue light comes on, that should tell the CFS unit to stop feeding, but it appears it does not and just keeps feeding.