Help with air conditioning Hyundai Accent 2005

What friends look 2 days ago I got a fault in the air, the technicians cannot be solved, my a/c or cpmpressor only works directly connected to the battery have already reviewed relay's gas-lighting load, and when I press the swithc on the board the condenser fan turned It will be electric failure or sensors help me thanks

It is only an electrical failure, in general there are no sensors that work with the air conditioning, and if at home it were like that, Chek's light would be turned on, if they already checked fuses and the entire system, it could be a cable problem the easiest thing to do is a new eleectric installation for the air command, it is the best solve, Peo Cheka the first fuses and the wiring if you do not find the face of an electric.