Came out today for QC visit on new mini split install. Started inside turned system down to check over unit. System is level all wiring is good no error codes. Getting over 20 degree temp split on all heads. System is clean annd operating as designed. Outside unit is level all electrical components are good and tight. All components are operating as designed. Unit in good working order upon departure. Thank you for your time. ------------------ On downstairs split system I 1. Visually inspected condenser coil for debris/ dirty. 2. Inspected condenser fan motor. 3. Inspected condenser fan blades. 4. Inspected/ cleaned wiring connections. 5. Tested compressor/ condenser fan motor capacitor. 6. Checked compressor amp draw. 7. Checked condenser fan motor amp draw. 8. Inspected / replaced return filter. 9. Inspected return plenum for debris/ dirty. 10. Inspected evaporator coil. 11. Inspected blower motor/ blower wheel. 12. Checked blower amp draw. 13. Measured temperature differential