I use Filament > Cooling > Exhaust fan > Complete print setting to speed up printer cooldown after finish, this actually adds custom M106 gcode to the end of the file:
;filament end gcode
END_PRINT
M141 S0;set chamber_temperature
M106 P1 S153
M73 P100 R0
; EXECUTABLE_BLOCK_END
and there seems to be no way to control this from anywhere, as the last manually editable script part is the machine end code which is END_PRINT.
So the question is, how to force the this fan to stop on say 40C bed temp achieved because it`s really loud when on?
My limited reading is that the fan will run post print and to cool everything down - once it has stopped it means it safe to power the device off
So maybe your experiencing expected behaviour and the over run will depend on the ambient temperature in the room
Instructions also state not allowing the cool down cycle to complete can lower the lifespan of key parts so it shouldn’t be changed or interrupted
It`s definitely not the cool down cycle, as thats an option in the filament settings and it is off by default. And also it runs indefinitely (hours on end) till I manually turn the fan off, all temp sensors shown room temp like in 30min or so.
Though thanks for your input =)