AC not working.

[Silver187]

Car is a 1.4L RS with 47000.
the fan blows air but isn't getting cold.
Checked the freon lv and it is full.
I went to start the car Monday morning and the battery was dead. after i charged the battery my AC stopped working.
What else can i check before changing out the compressor?

 

[minitrucking02]

Make sure the outside air temp is reading
Its the primary ibput for clutch coil