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Thermal Anomaly  

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samuel scerri
(@samuel-scerri)
Member
Thermal Anomaly

Hello,

I have recently changed the hot end of my Prusa i3 MK3S to the Revo hotend from E3D. I Followed the instructions step by step for the installation process. After I flashed the firmware as instructed to be able to use the Revo, I have started to get a Thermal Anomaly when trying to heat up the nozzle. I have checked to see if the problem is related to the heating element or the temperature sensor, but then realised when I run a self test the heating element heats up fine and the temperature reading is taken.

Can anyone please help me as I cannot seem to be able to fix it.

Opublikowany : 10/02/2024 11:00 am
AfterSchoolTeacher
(@afterschoolteacher)
Member
RE: Thermal Anomaly

I just switch my nozzle for the first time and got the thermal anomaly warning. Not sure how to fix it though. Any answers provided would be greatly appreciated. 

Opublikowany : 11/02/2024 9:29 am
fede
 fede
(@fede-2)
Member
RE: Thermal Anomaly

Hello, i have the same problem. After replace the hotend with other original Prusa MK3S hotend, the Thermal Anomaly message appear in to display and start a constant BIP sound.
please help me
thanks

Opublikowany : 14/02/2024 7:53 am
GP24Z7
(@gp24z7)
Active Member
RE: Thermal Anomaly

Hi all,
I only had the thermal anomaly when printing near the upper temp possibility without a housing. Or at least I thought that was the reason.  It was showing a few degrees difference between set and read value. I found a note which mentioned to do a temp calibration.
So not really what you asked....

Opublikowany : 14/02/2024 10:53 pm
fede
 fede
(@fede-2)
Member
RISPONDI: Thermal Anomaly

Hi everyone,I solved the thermal anomaly by simply doing the thermal calibration via the calibrations menu

Opublikowany : 17/02/2024 10:07 am
Jeff Poquette
(@jeff-poquette)
Member
RE: Thermal Anomaly

Revo on mine also. I upgraded to the latest firmware after seeing notes about it now being compatible with the Revo. That's when everything went wrong. The second I got to PID or Thermal calibration it would shut down. Prusa Chat told me to downgrade to 3.10 which I did. Now the tests fail at 110 degrees. If I heat the hot end using tune, it goes to my set temp but floats up and down, eventually spiking towards 300 degrees and then shuts down. Prusa pointed me to a Revo specific of the latest firmware version on Github. I installed that and there was no change. 

Now Prusa told me to contact E3D because according to them it must be a hardware issue with the Revo. The printer worked great until I did the initial upgrade, how could it be the hot end if all I did was a software update? I see a lot of similar questions but not many answers. 

Opublikowany : 18/02/2024 3:04 pm
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