Driver side blows cold passenger side blows hot. On ac or vent. on 2010 Ford Taurus

Just started. I can adjust the temp in the driver side. Even if I switch to the floor only hot the passenger side

Asked by for the 2010 Ford Taurus
I have the same problem.
let me know if any one figures it out.
It's an easy diy fix
1 more answer
Actuator under dash..I fixed myself