I/W Upon arrival had customer run 1st floor/basement system. Check applied voltage. 244volts Check compressor amperage. 7.08-8.37 amps Fan is running @ higher amperage than factory rating of .93 fan motor is pulling .94-1.16amps Checked compressor windings with meggohmmeter to show compressor is good. Spoke with technician support. Technical support recommended that a crank case heater may be helpful once refrigerant charge is above 10lbs. technical support also mentioned that in some case based on thermostat that is being used we could get reverberations @ outdoor unit. System is working @ this time, issue is premature we’re unable to determine cause of condenser making screeching sound on shut down. Customer will monitor system operation. Manufacture is aware of this issue with 1st floor Trane condenser. Need to monitor system operation in the future. Issue may need to be revisited @ a later time. View visual findings from this job here - https://visionshare.xoi.io/?id=XA-57DC-48E7