Mine didnt work either but i pulled my AC so it's all good. I pulled power steering too so my engine bay looks clean and easy it's easy to work on

 

My Car is a JSPEC R1 and I got my PFC from XS ..my Ac blows hot air most of the time and If I hammer on the car, it suddenly blows cold for a little while .. then once I go back to normal driving .. hot again ??!!??!!

 

im having the same problem im gonna try this purple wire thing and see what happens

 

let us know how it works...