@dc42 After unplugging the heater it still say 2000°. I made sure it is an thermistor an the config sets the input correctly.
Last I exchanged the toolboard but still got the wrong temperature reading. Maybe its an cable problem of the bus cable to the Mainboard ?

Hello everyone,

I just got a fully build Voron 2.4 with an Duet 3 mini 5+ WiFi and an External toolboard 1lc. Since the last print it says:
Heater 1 fault: failed to read sensor: bad Vssa
after restart. The temperature Von Heater 1 ist than shown as 2000°C witch sets the Heater in to fault.

Hopefully someone of you has an idea what's going on and can help me. Feel free to ask for needed information and I will try to tell you.

Greatings

theBAHNFreak