A/C blowing hot air

AC blows through all vents randomly sometimes cold sometimes hot. Took blend door actuator off and manually set doors to run on dash vents. Blew cold for three days, then suddenly quit and starting blowing hot. Checked compressor, clutch engaging, system charged at 35-45 psi. Changed control module, A/C pressure switch still blowing hot. Trying to find actuator that wiring harness fitting and bolt holes line up. Don't know what else to do but change compressor.