aircon turns on and off

[boknoy pancha]

hello...
please help me. i experience some trouble in my explorer, the aircon turns on and off. i checked the pressure,45 and 265psi.
thanks a lot..

 

[Rcflyer330]

Is the compressor turning off and on or the button or is the cold air going from cold to warm? Need a little more information on the problem to be able to help.