@schmluka
dont know if this will help, but this is my new setting, but not finish testing but a room temp, show me between 20 and 30 variable...
M308 S0 P"bed_temp" Y"thermistor" T100000 B3950 ; define bed temperature sensor
M308 S1 P"e0_temp" Y"thermistor" T4606017 B5848 C5.548428e-8 H0 L0 ;R4700 H0 L0 ;define E0 temperature sensor
M140 H0
M307 H0 A90.0 C700.0 D10.0 S1.00 V0.0 B1
M307 H1 A580.4 C256.6 D6.4 S0.50
M950 H0 C"bed_heat" T0 ; heater 0 uses the bed_heat pin, sensor 0
M950 H1 C"e0_heat" T1 ; heater 1 uses the e0_heat pin and sensor 1