Air Conditioning problem
1989 Mercedes Benz 420sel V8 Two Wheel Drive Automatic 250000 miles
I recently replaced the AC relay and had the compressor refilled and checked for operation ( it was good). It was functioning fine and then, when I pressed the usual button on the climate control unit the fan blew fine but the compressor did not engage. Since I was checked only a few days ago and I replaced the relay, Is there another electrical switch or fuse that could be blown out/ failed. Please advise.