Bed thermistor error after switching to 6.5.3
 
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Bed thermistor error after switching to 6.5.3  

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Lordran_Hollow
(@lordran_hollow)
Eminent Member
Bed thermistor error after switching to 6.5.3

Hey all, just wanted to see if anyone else is encountering this issue I'm having. If I set the bed temperature manually to heat up to a specific temp (in this case I'm setting to 100C), the printer will throw a thermal runaway error citing the bed thermistor. 

 

Now here's the thing, if I print and the bed heats up to this temp, it's perfectly fine. Even after hours of printing. The manual heat up method throws the error within a minute. 

 

I print with ABS and I like setting the bed temp so that the chamber has time to soak up the heat since my enclosure is passively heated. It's not the end of the world that this issue is happening, but I was curious if anyone else has started experiencing this issue after upgrading the firmware.

 

The full setup is a Mk4, with 6.5.3 firmware, and an MMU3. 

Posted : 01/05/2026 12:26 pm
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