Topics created by jonasr75

What firmware version were you running on the previous board?

At this point I would suggest you update the firmware on the board and generate a new set of config files using the online configurator.

https://docs.duet3d.com/en/User_manual/RepRapFirmware/Updating_firmware

https://configtool.reprapfirmware.org/Heaters

And treat it like a new printer build and go through commissioning.

https://docs.duet3d.com/en/How_to_guides/Commissioning

@jonasr75

where is the function of these jumpers explained in more detail?

See Wiring your Duet 2 mainboard, section 20: External 5V input and power supply control.