If the fan doesn't come on, neither will the AC. Sometimes, though rarely, any code for any of the intake fans or sensors will not allow the power stage to send signal to the cabin fan to run. If it doesn't run, obviously, the compressor will not come on. If the interior fan does run, check to see if you have power to the low side pressure cycling switch, if you do, jump the switch for no longer than about 5 seconds, see if the compressor comes on. If the compressor does not come on, check the ground and power wires to the compressor, since it was recently done, a wire could come loose. If the compressor does come on, you most likely have a dead pressostat.