A/C not working, no codes after leak fixed and recharged. What's wrong?

I just got the car back today (replaced compressor and dryer. The shop says that the pressure readings at low and high are about 32 and 165, respectively. I'm assuming that they had to get the A/C to work to get these readings, but I can't get the compressor to come on (I've tried setting the temp at 65, pressing Defrost, etc). I did the A/C diagnostic and the first time it said code 14 (Evaporator Sensor open), but I reset it and tried to get the A/C to work again (which it didn't...figures) and tried the diagnostic a few more times and now the code is 00 (nothing). What could be keeping the A/C from working?

Thanks for any help