What I found to be the issue was the aftermarket Tstat. Poor fluid flow. Once I replaced the tstat went away… for a while. When it’s super hot out, comes on as I think the pressures are off in the A/C. Apparently, expansion valve gets something in it and causes pressure to sky rocket. But, if it’s super cold out, that should not be the issue. Can also be the A/C switch malfunctioning? It’s ridiculous Ford doesn’t have more on this as this is a constant issue with F150.