I took my AC to get recharged today, because AC is the only thing I don't do on my car (hate working on AC for some reason). I didn't realize r12 was so dang expensive nowadays. Anyway,

He charged the system up to full capacity, and checked for leaks but could not find any. But he told me there was a problem. He said the condensor fans (are these the fans in front of the radiator) were not coming on when the pressure got high. He said that they would come on when triggered by temperature, but would not be switched on by a pressure signal. He then told me not to run the AC in traffic as the pressures would shoot up and could damage the system.

Anyone know whats going on? Is he just feeding it to me or is there really a problem?

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I love my cars to death but my wallet sure doesn't.

I would think an a/c guy would have fixed the fans when he charged it...
Anyway,
..he is correct in the fact that the fan should come on when the high side pressure reaches switch cut-in pressure. [I think yours is 20 bar]
You want to look at the fuse first , the resistor wires behind the driver headlamp, and , just in case he did not check it, jumper the high pressure switch at the drier and see if you get fan ..
If not , you have a circuit problem, [fuse,relat,etc.]if yes, then you have a bad sw OR, he did not completly charge the system..[providing it is a warm.hot day, of course]
Gages are nice here, but a quick look at Eye Sight glass will tell if freon level
is adequate to trip fan pressure sw.
There is much info on a/c condenser fan operation in archieves..