Temperature issue after upgrade MK4 to MK4S
 
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Temperature issue after upgrade MK4 to MK4S  

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usiegel
(@usiegel)
Utenti
Temperature issue after upgrade MK4 to MK4S

I upgraded from MK4 to MK4S two days ago.

In print settings i changed to "0.20mm SPEED @MK4S HF0.4".

Now i see the behaviour that before the print starts the nozzle heats up to 173°C/170°C (which is too high), then
comes the line the printer draws in left corner to fill the nozzle, and
to start the print, the temperature goes up to 233°C/230° (again too hot).

During the print nozzle temperature goes down to 216°C/230°C and print fails.

When using old printer settings temperature goes down 225°C/230°C and then recovers to 233°C.

Any ideas?

Postato : 02/01/2026 2:47 pm
Laban
(@laban)
Utenti
RE:

Are you trying to set a specific temperature in the manual controls? Is the temperature being maintained?

 

Questo post è stato modificato 1 day fa da Laban
Postato : 03/01/2026 12:26 am
usiegel
(@usiegel)
Utenti
Topic starter answered:
RE: Temperature issue after upgrade MK4 to MK4S

Not 100% sure what you mean by "trying to set a specific temperature in the manual controls? Is the temperature being maintained?",
but i'm using Prusa Slicer (2.9.4) and in there Prusa Connect.
I load the STL file and select "Slice now", followed by "Send to Connect". I always use first option so that print starts immediately.
Neither i change manually the temperature nor do any other manipulations.

Postato : 03/01/2026 8:04 pm
miroslav.h4
(@miroslav-h4)
Honorable Member
RE: Temperature issue after upgrade MK4 to MK4S

But it doesn't ask you for any printing! He asks if it is possible to set a specific temperature in the manual temperature setting mode of the heating block and how the printer maintains it! In addition, check whether you have a silicone cover on the heating block and whether it is also selected in the printer settings!

Postato : 03/01/2026 8:51 pm
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