Thermal anomaly on firmware 3.12.2  

RE: Thermal anomaly on firmware 3.12.2

Posted by: @karl-herbert

Try to deactivate new thermo protection with "M310 S0".

Maybe it helps.

wbr,

Karl

Thank you Karl.  I will give that a try.  I have ordered a new thermistor.  Not sure when the thermistor get here though.  So I will try out the thermo protection deactivation for a small print.

RE: Thermal anomaly on firmware 3.12.2

Posted by: @karl-herbert

Thanks for the information! I would urgently forward the problem to Prusa or github. Probably several more people have the same problem.

Prusachat: Just log in with your Prusa account and select the eshop. After a few seconds the chat window should appear on the lower right corner. If the chat window does not open, disable a possibly activated adblocker or try another browser.

github: https://github.com/prusa3d/Prusa-Firmware-Buddy/issues geometry dash lite

wbr,

Karl

Yes. I am also one of those who encountered this problem. Even though I followed everyone's instructions, I still couldn't fix it. I have to admit that my skills are not too good, maybe that's why I did something wrong in some step

RE: Thermal anomaly on firmware 3.12.2

If you can't manage on your own, you may be able to find someone in your area to support you - see https://world.prusa3d.com/de

wbr,

Karl

RE: Thermal anomaly on firmware 3.12.2

Thermistor arrived and I installed it (with a little struggle).  Thermal anomoly went away.  It's not quite printing correctly, though.  What is recommended to do after replacing a thermistor?  (I did do the TM cal, and a PID cal.)  I had the printer on it's sides to get access, does that mean a new xyz cal?  I think the right side is slightly higher than the left, due to manually having to lift the print head away from the platen.

Is there a complete list of recommended steps to do after a thermistor replacement?  Thanks.

RE: Thermal anomaly on firmware 3.12.2

Hello Prusa-Users,

I'm quite new in this forum and I tried to solve my problem with a "Thermal anomaly" issue.

In a nutshell:It is an Original Prusa i3 MK3S+ without any modifikations. (Ready to run and tested.)Everything worked fine but the more I printed the more I got the peep-Error.

I updated to FW to 3.13.2

My wife asked what happend and I told her that the printing process will not stop,

So what:*.) Check the nossle and clean it. (It was blinking!)*.) Check the Thermistor if its probably anlinged.*.) Maybe the error is caused by the heating bed. --> No (I dont know if these two partes are involved in the error.)*.) Moved the Prusa to another Place (Also no Airmovement arround the system involved)*.) Removed the Silicon-Cap (Light-Blue) from the Heat-Block. (Recalibating all Parameters.)*.) New Prints, but at round about 5min I got the same Problem. (Restart Print, Resart Print ...--- and then again "Clear TM-Error")

Then I startet to do a reasearche on the web and found this artikle: https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-hardware-firmware-and-software-help/thermal-anomaly-on-firmware-3-12-2

Very helpfull!

So I desided to backroll the FM to 3.11.0 an two of my prints worked realy fine.

The problem seams to be on the Software-Side (Firmware) an not at the hardware side.

I hope I could help

Sorry the format but I wrote it in Plain-Ascii and the Forum-Software did that to me 🙁
Copy-Paste in Plain is no loger without an extra shortcut 🙂

RE:

Hi,

I think my problem with the "thermal anomaly" is solved now.
Since I backrolled my FW to 3.11.0 I had no troubles till now.

--> All my prints which failed are now working.

From my point of view it is definitely a Software-Problem (FW) i had.

Thanks to the community

RE:

Just wanted to chime in and say i have been having the same issues with the thermal anomaly. Hadn't updated my firmware in years and printer was working great, after the latest firmware update I get nothing but thermal anomaly beeping. This has never affected the prints, it just keeps on chugging, but the beeping is unbearable.

For awhile, i tried running custom firmware with the thermal warnings taken out, and everything works great. This is definitely a firmware issue that prusa needs to look into, or at least let us silence the beeping. 

RE: Thermal anomaly on firmware 3.12.2

Posted by: @mahony

Hi,

I think my problem with the "thermal anomaly" is solved now.
Since I backrolled my FW to 3.11.0 I had no troubles till now.

--> All my prints which failed are now working.

From my point of view it is definitely a Software-Problem (FW) i had.

Thanks to the community

Thanks for your feedback. At the moment the easiest solution seems to be a downgrade to 3.11.x.

happy printing!

Karl

RE:

I'd like to add my two cents and maybe a little food for thought. I have a Mk3s+ that I built from a kit directly from Prusa over a year ago. Never any issues, built like a tank and steady as all get out. I put off doing a firmware upgrade for a while since we moved a couple months back and I just hadn't had the time to set up all the networking stuff. Finally got that all squared away, upgraded to 3.13.2 and then the thermal anomaly started happening.  I was printing almost exclusively in PLA with some PETG sporadically. At the time of the firmware upgrade, I got some spools of TPU to play with and have been on that for a while.  What I was wondering, but have yet to switch back to a different type, is if printing with TPU has anything to do with it. Not the filament itself, but I am following the recommended guidelines and printing with the fan OFF for the first few layers. This is when I get the alert, and only at the beginning of the print. It will say Thermal Anomaly on the screen the whole time, but the beeping only happens in the first layers and it never stops printing. The prints all come out fine in the end. I'm still dialing things in and fighting the Spaghetti Stringing Monster but that's on me and my inexperience. This anomaly is vexing to be sure. Whoever is having these issues, what filaments are you printing? Trying to see if this is maybe a commonality we all have  that nobody has explored as of yet.  *shrug*

---LV

RE: Thermal anomaly on firmware 3.12.2

According to this article, you have to calibrate the thermal model. A pity it doesn't say it isn't calibrated - or forces it at first boot of the newly flashed FW. https://help.prusa3d.com/article/thermal-model-calibration_382488

RE: Thermal anomaly on firmware 3.12.2

Thanks!  I was getting nothing but grief with that thermal anomaly. I’m back to 3.11.0 and everything is back to normal. I too will be staying with that version for the foreseeable future. 

RE: Thermal anomaly on firmware 3.12.2

Posted by: @mb3y

According to this article, you have to calibrate the thermal model. A pity it doesn't say it isn't calibrated - or forces it at first boot of the newly flashed FW. https://help.prusa3d.com/article/thermal-model-calibration_382488

I also had frequent "TEMPERATURE ANOMALY" warnings with my first print after upgrading my firmware. A simple on-the-fly solution ended up being to lower the fan speed just a little bit using the Tune menu. I'll perform the thermal model calibration between this print and the next, but it really is a shame that there isn't some kind of "first time setup" after the flash.

RE: Thermal anomaly on firmware 3.12.2

Does not help!

Thermal Anomaly is gone, but finally the printer stops at thermal runaway. Changed heater and thermistor by new ones - did all calibration checks... same shit.

My printer has been printing some 12km of filament - total printing time more then 270 days without problems. Now it's a piece of scrap. Even running the latest version of the firmware does not help. Fortunately I have other printers (nonPrusa :))

RE: Thermal anomaly on firmware 3.12.2

Sorry, forgot to quote.

M310 S0 does not help.

RE: Thermal anomaly on firmware 3.12.2

I understand you are frustrated, but please don't swear. Really no need in a public forum.

Did you by any chance measure the resistance of both the new heater and thermistor?  It seems that for a while there was a bad batch of bad thermistors.  I had one go bad on my on my MK3S+.  Replacing the thermistor seemed to have fixed my problem - although the new one wasn't significantly different resistance reading at room temperature than the "bad" one.  My "bad luck" I then upgraded to the MK4 kit, and ended up not using the thermistor!  But it did help me get through printing a couple of parts.

Posted by: @luc-v2

Does not help!

Thermal Anomaly is gone, but finally the printer stops at thermal runaway. Changed heater and thermistor by new ones - did all calibration checks... same shit.

My printer has been printing some 12km of filament - total printing time more then 270 days without problems. Now it's a piece of scrap. Even running the latest version of the firmware does not help. Fortunately I have other printers (nonPrusa :))

RE: Thermal anomaly on firmware 3.12.2

Did not intend to swear, sorry.

I switched back to 3.11.x (version prior to 3.12)

As I said, changed heater & thermistor. The strange thing is that the errors occur after some time (45min to 1hr) if the printer was switched off and cold.

Once the printer has the errors - restarting the print does not help - it's back after a few minutes. Power down & restart tomorrow and you are good again for some time. I was monitoring the temperature on the display and the hotend temperature drift while printing was a few degrees at max.

Even ordered today @ prusa a whole new extruder...  For me, this smells like a firmware problem. Let's wait and see. 

Posted by: @bruce-labitt

I understand you are frustrated, but please don't swear. Really no need in a public forum.

Did you by any chance measure the resistance of both the new heater and thermistor?  It seems that for a while there was a bad batch of bad thermistors.  I had one go bad on my on my MK3S+.  Replacing the thermistor seemed to have fixed my problem - although the new one wasn't significantly different resistance reading at room temperature than the "bad" one.  My "bad luck" I then upgraded to the MK4 kit, and ended up not using the thermistor!  But it did help me get through printing a couple of parts.

Posted by: @luc-v2

Does not help!

Thermal Anomaly is gone, but finally the printer stops at thermal runaway. Changed heater and thermistor by new ones - did all calibration checks... same shit.

My printer has been printing some 12km of filament - total printing time more then 270 days without problems. Now it's a piece of scrap. Even running the latest version of the firmware does not help. Fortunately I have other printers (nonPrusa :))

 

RE: Thermal anomaly on firmware 3.12.2

Posted by: @luc-v2

Does not help!

Thermal Anomaly is gone, but finally the printer stops at thermal runaway. Changed heater and thermistor by new ones - did all calibration checks... same shit.

My printer has been printing some 12km of filament - total printing time more then 270 days without problems. Now it's a piece of scrap. Even running the latest version of the firmware does not help. Fortunately I have other printers (nonPrusa :))

I had the same "thermal runaway" problem years ago. The problem was caused by a loose contact in the thermistor connection cable to the printer board. Plug connections are also a weak point.

wbr,

Karl

RE: Thermal anomaly on firmware 3.12.2

Along those lines mentioned by @karl-herbert make sure you have good electrical contacts AND thermal contact for the heater and thermistor.  So snug (but do not crush anything) those set screws, and make sure the connectors make firm electrical connection.  If the connectors install "too easily" you might have poor contact, which might be a problem only after things heated up.

RE: Thermal anomaly on firmware 3.12.2

I kept an eye on the hotend temperature. With a bad contact, I think the temperature should change seriously. Not the case with me.

I think in the pre 3.12 firmware thermal errors were generated when temperature changes more the 15° from the setpoint. This seems logic to me. Indicates a real problem.

Posted by: @karl-herbert

Posted by: @luc-v2

Does not help!

Thermal Anomaly is gone, but finally the printer stops at thermal runaway. Changed heater and thermistor by new ones - did all calibration checks... same shit.

My printer has been printing some 12km of filament - total printing time more then 270 days without problems. Now it's a piece of scrap. Even running the latest version of the firmware does not help. Fortunately I have other printers (nonPrusa :))

I had the same "thermal runaway" problem years ago. The problem was caused by a loose contact in the thermistor connection cable to the printer board. Plug connections are also a weak point.

wbr,

Karl

RE: Thermal anomaly on firmware 3.12.2

Sure you've done the calibration? https://help.prusa3d.com/article/thermal-model-calibration_382488