Firmware 3.13 is garbage for the MK3s, stay away from it THERMALANOMALY, GO BACK TO 3.11  

RE: Firmware 3.13 is garbage for the MK3s, stay away from it THERMALANOMALY, GO BACK TO 3.11

grin.. mine's at 3.11 for its lifetime   .. 

RE: Firmware 3.13 is garbage for the MK3s, stay away from it THERMALANOMALY, GO BACK TO 3.11

First did you do thermal calibration 

RE: Firmware 3.13 is garbage for the MK3s, stay away from it THERMALANOMALY, GO BACK TO 3.11

Yeah, try to do the Thermal Calibration.

https://help.prusa3d.com/article/temperature-calibration_133266

Here's more on the Thermal Model.

https://help.prusa3d.com/article/thermal-model-calibration_382488

RE: Firmware 3.13 is garbage for the MK3s, stay away from it THERMALANOMALY, GO BACK TO 3.11

Good tip! This resolved my issue. 

RE: Firmware 3.13 is garbage for the MK3s, stay away from it THERMALANOMALY, GO BACK TO 3.11

Had the same thermal anomaly when I first updated my printer to 3.13.2-RC1.

After a number of attempts to go back the previous versions (need to do complete factory resets to do that successfully btw) I realised I had to do a thermal calibration.

So I flashed the FW  again to the latest version and then did the calibration.

Now the printer runs really great but if the calibration is so vital maybe there should be some indication whether or not the calibration has been done?

RE: Firmware 3.13 is garbage for the MK3s, stay away from it THERMALANOMALY, GO BACK TO 3.11

After going through the calibrations on my MK3S+ and continuing to get Thermal errors on 3.13.3 I finally did a factory reset and went through all the calibrations. Then prints would just stop randomly mid print and I'd see everything cooling down with no message or error. I've literally gone through a kg spool of filament dealing with these 3.13 issues over 3 days. I finally went back to 3.11, factory reset/calibrations and I'm back to printing without issue.

RE: Firmware 3.13 is garbage for the MK3s, stay away from it THERMALANOMALY, GO BACK TO 3.11

I've tried to run the thermal calibration and get nowhere.  I start the calibration, the extruder moves to the center of the print bed, warms to 50C then errors out.  Every.  Single.  Time.  Beyond frustrated!

RE: Firmware 3.13 is garbage for the MK3s, stay away from it THERMALANOMALY, GO BACK TO 3.11

Hi

My 2cents. Also have problems with thermal anomaly, and only genuine parts. I have sw version 3.12 though..

For PETG I use 230°C for hotend and 80°C for bedtemp

When thermal anomaly occures, print halts and both the bed temp and hotend temp still shows the current temperature, but wanted temperature shows 0°C

Like this   230°C/0°C

I may resume print but the printer then changes wanted temperature to 240°C for the hotend and 90°C for bed, and it start to slip layers and print fails catastrophically.

After this occurred I started a diagnosis, and now I get both an X-axis and Y-axis length error.

I replaced pullyes (tightened the screws correctly) and changed belts, to no help.

Will try to revert to 3.11

RE: Firmware 3.13 is garbage for the MK3s, stay away from it THERMALANOMALY, GO BACK TO 3.11

I was having the same issue after updating to 3.13 and Prusa support advised me to order a new thermistor (not covered by warranty). I did order the new part but today I went back to 3.10 just to see what happens. Printing just fine.....  I will probably install the new thermistor when it arrives.

RE: Firmware 3.13 is garbage for the MK3s, stay away from it THERMALANOMALY, GO BACK TO 3.11

The key is:

M310 S0

M500

Thermal Model Deactivated. Problem solved.