Service call was for unit 4. Unit was running in cooling on arrival. Checked human interface in package unit. Checked active alarms and alarm history. Unit had a good amount of actuator faults in history. Unit had no active alarms at this time. Checked actuator in economizer. Actuator wasn't opening when testing. Need to replace actuator. Economizer module was faults out on communication. Checked 24 volts and dc signal to module. Module was getting ac and dc voltage. Module is bad (not communicating with system) Need to replace module. Ran system through cooling cycle and checked temperature on supply and return air. Checked charge on system. Head pressure was running higher than normal. Checked condensing coil. Condensing coil was very dirty. Cleaned condensing coil with water. Microchannel condensing coils take a long time to dry properly. Need to recheck refrigerant charge when return to change actuator and module for economizer. Delta t on air was running 18.5 degrees. System is r