@dc42 Thank you for your help! We had to fix the jumpers and connect a power supply for the fan pins to work.

I am having an issue with the fan pins on my duet 2 board. I am trying to connect a fan to the fan zero pin and am reading a very low voltage (0.5-1.5V). Initially, it seemed to be a board issue but I have had the issue across two different duet 2 boards. I have also attempted to manually run the fan using the terminal and tried using the always on fan pins and am unable to get the fan working. I also connected the board to a 12V supply with no change in fan readings.
I've linked the config file, the firmware version is: 3.3
config.g