@dc42 Thanks for the answers.

Wiring is brand new, no shorts. I confirm the T25 R is 4606017 ohm.

board: duet 3mb6hc
firmware: 3.3 config w/ reprap online configurator.

Will try the calibration.

At room temp on a duet2 firmware 2 I have no issue beside the usual low accuracy at room temp.

Hi,

Is there a way to use a thermistor 500°C with the Duet3

Sensors config is

M308 S1 P"121.temp0" Y"thermistor" T4606017 B5848 C5.548428e-8
M950 H1 C"121.out0" T1

My reading is -273°C, impossible to heat up. Always faulty.

Thanks.