"TMC DRIVER OVERTEMP" with PETG after upgrade from MK3 to MK3S MMU2S
 
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"TMC DRIVER OVERTEMP" with PETG after upgrade from MK3 to MK3S MMU2S  

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michael.s186
(@michael-s186)
New Member
"TMC DRIVER OVERTEMP" with PETG after upgrade from MK3 to MK3S MMU2S

I have 2 Prusa i3 MK3 and both recently upgraded to MK3S MMU2S (One for my company and one for private). 

Both are enclosed in IKEA LACK constructions; one with ceiling height of 55cm, the other one has 66cm space to top.

And both struggling now while printing with PETG: At a random time (usually 1 - 5h) they stop printing with message "TMC DRIVER OVERTEMP". (It occured 4 times with different models so far.) PLA instead works fine.

What's the problem and how can I handle it? The environment temperature doesn't seem to be a factor. It occures after 5 hours in a 40° environment and even so after 1h with 28°.

I had never such problems before the upgrade. :-/
In some posts on other websites I've read that the FW 3.7.0 might be the cause. But such bug would surely be fixed already, or am I wrong?

Posted : 12/05/2019 12:38 am
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(@)
Illustrious Member
RE: "TMC DRIVER OVERTEMP" with PETG after upgrade from MK3 to MK3S MMU2S

There is a new firmware release candidate 3.7.1-RC that mentions overheating issues have been fixed.

https://forum.prusa3d.com/forum/original-prusa-i3-mmu2s-mmu2-general-discussion-announcements-and-releases/firmware-3-7-1-rc1-for-original-prusa-i3-mmu2s-mmu2/

This post was modified 5 years ago by --
Posted : 12/05/2019 5:53 am
michael.s186
(@michael-s186)
New Member
Topic starter answered:
RE: "TMC DRIVER OVERTEMP" with PETG after upgrade from MK3 to MK3S MMU2S

Thank you! I will try it asap. 🙂

Posted : 12/05/2019 7:18 am
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