I have been working with Creality for the last few weeks on at first intermittent, but now constant 2355 errors. The first symptom was a BM0111 error about abnormal connectivity with the nozzle. Jiggling the hotend wiring seemed to get that to go away for over a week, then it happened again. Traded emails with support, the sent out a new hotend motherboard. However, the issue again went away (without replacing the board) and I was able to print without incident until I wasn’t again. This time with intermittent 2355 errors. I can turn on the machine and do a calibration and it goes black with a 2355 error mid calibration. I’ll reboot, make it through calibration, try printing. Just as it finishes laying down the test strip, black, error 2355. Keep getting 2355. So I replace the hotend motherboard now. Still the same issues. Get on with Creality support via WhatsApp, they send me a new hotend, hotend motherboard, and drag chain wire. I replace each one at a time, none of them fix the issue. I can’t print. Or at least consistently. I have printed 1 benchy and 2 calibration cubes in the last 2 weeks. I plan get get on WhatsApp tonight, but thought I’d post here in hopes of someone giving me another avenue to try. I have taken apart the toolhead to get to the motherboard a few times to make sure the connections are solid. I’ve tried to make sure all the screws are tight. Not sure what else to do.
I should add I have downgraded and upgraded the firmware. I am currently on the latest V1.2.10.
Spoke with support tonight. They asked for my logs. So have to wait a few days for them.
Just in case anyone runs across this and doesn’t see the Reddit post I made about it. I solved my issues by replacing the drag chain wire. I hadn’t actually replaced it. I didn’t know how, but after posting I thought I’d give it a try because I had nothing else to lose, and tore it all apart. It fixed my issue. And as I was buttoning everything up after all my tests, Uncle Jessy posted he had similar issues and fixed it with a new cable. Hopefully they offer the part on the website soon. Also hope they redesign it because the 2 90 degree bends it has to make now make me very worried this will happen again.
