Hello, I have a 1990 Prelude Si. I had the A/C converted over to R-12 this summer. It worked for a few months, then it stopped. I noticed the A/C clutch wouldn't engage when it was turned on. I still had good freon pressure. The fan would blow, but it was hot air. Could it be a fuse or something I might check? I quit using it. I didn't worry about it at the time because the summer was over. Can anyone help?

Thanks!