Stop fan from always/often running on Asus VivoBook, Arch Linux

I recently got an ASUS VivoBook Pro 15 OLED for college, and installed Arch Linux on it (this was my first experience outside of Ubuntu). It's mostly worked fine - I've got KDE Plasma installed, and I also have TLP for battery management if that's important. I noticed that the fans seem to be running almost constantly, but it's not a thermal or performance issue - the CPU is not hot at all ( 40 C), almost nothing is running and it starts pretty much on boot. This happens both plugged into AC and on battery. Instead this seems to be a fan control issue, but I'm not sure how to solve it. I've tr

Question by Josh Op on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.