AC compresor clutch does not engage
hello guys. I am new in this forum and i dont really know how things work. I recently bought a Fiat Grande Punto 2007 and i realised that AC was blowing only hot air. My first thought was that it needs rechange, so I did. After the recharge it still didnt work and the guy there told me that it may be a compresor problem and no power was going into the compresor. We changed the relay but as soon as i turned on the car the relay burned out, this happend 2-3 times. and also i hear a ticking sound , it maybe an eletrical discharge or something. So can any of you tell me what may be the problem?