Delta Fan not turning off at 0%.

I have installed a delta fan today, and the fan will not shut off when its indicating 0% in the dashboard. I have everything connected to the octopus 1.1 pro board like in the screenshot attached. I also included the following to printer.cfg:

[fan]
pin: !fan_part_cooling_pin
cycle_time: 0.01
enable_pin: PA3 #I checked the pin diagram for the heater controller pin HE1

Would anybody know what I'm doing wrong?