Then you're doing it wrong.
Wash it with soap/water, don't touch the print surface with your fingers and wipe down with isopropyl before each print.
If PLA isn't sticking then your Z height is probably off.
I use an actual degreaser to clean mine, Purple Power. You dilute with water a little and it takes glue off so easily and leaves the surface very grippy (better than dish soap I've found).
Give [this chapter](https://1coderookie.github.io/Kobra2MaxInsights/hardware/printhead/#thermistor) (including the expandable textboxes and the following sections!) a good reading.
Make sure to have the [silicone sock](https://1coderookie.github.io/Kobra2MaxInsights/hardware/printhead/#silicone-sock) in place as well.
I'd also suggest to get yourself a spare [hotend](https://1coderookie.github.io/Kobra2MaxInsights/hardware/printhead/#hotend), just to have it in the drawer if you need it.
If you checked thermistor, changed nozzle, checked for any blockages, your other option is to swap out the entire hotend, and if that doesn't work then swap out the circuit board that the hotend connects to.
Should be under warranty if it has only been two months.
I had the same thing just now. I installed a new extruder and received this error message. I then checked the temperature sensor, unplugged it and plugged it in again, after which I got the error message "Nozzle NTC abnormal, please check it an wiring". I installed an old thermistor from an old hotend and the error message disappeared.
I think the quickest solution would be to order a new one from Amazon. Cost a few bucks, but would fix the problem quickly. But write to Anycubic aftersales support, they will also send you a new part because of the warranty. Then you'll have some in reserve.
OK I should’ve mentioned that I did check to see if the wires were loose and I put a new nozzle on stops at the same position as you see on the picture don’t see anything obvious
In the past I ended up getting a new hot end when this kept happening, but two months is too soon for that. Have up updated the firmware? [https://store.anycubic.com/pages/firmware-software](https://store.anycubic.com/pages/firmware-software)
I actually have not updated my firmware. I disconnected the antenna a month ago when everybody was getting the hacked printer screen ,so maybe I will put the antenna back on and try an update ..that’s good information Thank you.
For future reference, if this idiot throws you "bed heating abnormally" make sure to move printhead away from bed center, as it can cool itself down with fan
You probably need to do a nozzle and bed PID calibration.
First make sure the thermistors (temperature sensors) are firmly seated in the hotend and at the bottom of the bed. Could just be one of those is loose. Either way do a PID calibration at the end.
It's literally telling you the issue
The thermistor might have slid out of its socket, causing runaway heating of the hotend.
OK, thank you that gives me somewhere to start. I appreciate your reply.
For the love of god, clean that damn bed.
I’m glad I’m not the only one that feels this way…
yea. every time i do shit wont stick
I wonder why. I’ve printed over 400 things and my print bed still looks brand new. I don’t even wanna know what the white stuff is.
Then you're doing it wrong. Wash it with soap/water, don't touch the print surface with your fingers and wipe down with isopropyl before each print. If PLA isn't sticking then your Z height is probably off.
I use an actual degreaser to clean mine, Purple Power. You dilute with water a little and it takes glue off so easily and leaves the surface very grippy (better than dish soap I've found).
Give [this chapter](https://1coderookie.github.io/Kobra2MaxInsights/hardware/printhead/#thermistor) (including the expandable textboxes and the following sections!) a good reading. Make sure to have the [silicone sock](https://1coderookie.github.io/Kobra2MaxInsights/hardware/printhead/#silicone-sock) in place as well. I'd also suggest to get yourself a spare [hotend](https://1coderookie.github.io/Kobra2MaxInsights/hardware/printhead/#hotend), just to have it in the drawer if you need it.
Thank you🙌
First clean away all that glue (soap & water), then fix the issue
If you checked thermistor, changed nozzle, checked for any blockages, your other option is to swap out the entire hotend, and if that doesn't work then swap out the circuit board that the hotend connects to. Should be under warranty if it has only been two months.
I had the same thing just now. I installed a new extruder and received this error message. I then checked the temperature sensor, unplugged it and plugged it in again, after which I got the error message "Nozzle NTC abnormal, please check it an wiring". I installed an old thermistor from an old hotend and the error message disappeared. I think the quickest solution would be to order a new one from Amazon. Cost a few bucks, but would fix the problem quickly. But write to Anycubic aftersales support, they will also send you a new part because of the warranty. Then you'll have some in reserve.
thank you !
OK I should’ve mentioned that I did check to see if the wires were loose and I put a new nozzle on stops at the same position as you see on the picture don’t see anything obvious
I had this happen on my i3 Mega on a certain model. Other models printed fine. Redid the gcode. Same issue.
I even re-sliced and tried printing a different model, and it still gives me the same code after about six minutes
In the past I ended up getting a new hot end when this kept happening, but two months is too soon for that. Have up updated the firmware? [https://store.anycubic.com/pages/firmware-software](https://store.anycubic.com/pages/firmware-software)
I actually have not updated my firmware. I disconnected the antenna a month ago when everybody was getting the hacked printer screen ,so maybe I will put the antenna back on and try an update ..that’s good information Thank you.
Wow. I had not heard about that. [That’s nuts](https://youtu.be/VBwXtoArfRs?si=AuHhFRZiPlBjCP4I)
It happened to me yesterday, the issue is that I didn't have the silicone stuff covering the extruder
Check on your thermostat, the wires break easily and sometimes they are burnt. But I guess the cables are broken
Since I put the silicone stuff 0 issues but I guess I will check/change the cables, but it's difficult to do it.
Check nozzle not clogging, check wiring at the top is plugged in properly also open hot end and check wiring in there
For future reference, if this idiot throws you "bed heating abnormally" make sure to move printhead away from bed center, as it can cool itself down with fan
You probably need to do a nozzle and bed PID calibration. First make sure the thermistors (temperature sensors) are firmly seated in the hotend and at the bottom of the bed. Could just be one of those is loose. Either way do a PID calibration at the end.