I own a 2002 Honda Civic... and the A/C only blows hot air, I have replaced the compressor, wires, relay recharged it, fix all leeks you name it I spent over $1200 on my ac and for some reason it still blows HOT air, I took it to one of our local mechanics and he that the negative switch is not switching on... he said i should replace the AC climate panels located inside the car. Is that the problem?