I think my fridge fan setup turns on @ around 80*. It's a built in setup, but that's what I seem to recall about it.
It pretty much runs anytime the fridge is cooling with either 120v or gas. Which is good.
🙂Mitch
2013 F150 XLT 4x4 SuperCab Max Tow Egoboost 3.73 gears #7700 GVWR #1920 payload. 2019 Rockwood Mini Lite 2511S.