Bed Thermal Runaway
After a print (PETG). Purging. I removed the bed sheet (and I did move the bed doing so). Then started a new print (PETG).
Got the screen flashing red with the message Bed Thermal Runaway with the fan 100%. I hit the reset button. Everything back to normal.
Probably because I moved the Y axis bed out of range ?
Best Answer by Bodo:
@pascal-l4, there's an issue reported on github that is similar to yours:
https://github.com/prusa3d/Prusa-Firmware-Buddy/issues/24
My workaround is to stop the pre-heating, assemble the bed until the bed temperature in the display in falling at a slower pace; ie. <1 °C (K) per second, only then I restart heating. Works ok, is the smallest possible delay/heat loss I found.
RE: Bed Thermal Runaway
It had been observed that if you put cold steel sheet onto bed, it may trigger thermal runaway.
RE: Bed Thermal Runaway
@pascal-l4, there's an issue reported on github that is similar to yours:
https://github.com/prusa3d/Prusa-Firmware-Buddy/issues/24
My workaround is to stop the pre-heating, assemble the bed until the bed temperature in the display in falling at a slower pace; ie. <1 °C (K) per second, only then I restart heating. Works ok, is the smallest possible delay/heat loss I found.