I just upgraded my CR10 with a genuine e3dv6. after changing the firmware(marlin 1.8.7) like described here. #define TEMP_SENSOR_0 5 ... #define TEMP_SENSOR_BED 5 ... #define HEATER_0_MAXTEMP 285 I started up my printer and tried to print something. and the heating up takes forever. when it reches roughly 152 it won't go further until I get an error message in marlin. Heating failed Printer Halted please reset even when I do the PID tuning I get this error. any help is much appreciated.