Complaint of noise from a trane AC and intermittent no cool Everything measures within factory specifications: capacitor, Amp draws, refrigerant charge, and delta T Per the fact sheet for the outdoor unit, a start relay and capacitor are an approved accessory Installed a start relay and capacitor Purposely short cycled the Compressor to attempt to recreate reverse compressor direction and locked rotor. Compressor starts properly and in the correct direction every time.