Johnson Controls P128AA-17 Oil Control Refrigerant you must use the AG13B

you must use the AG13B series to avoid motor failure

as well as several PDP and PAE industrial units

The RSD series focuses on streamlined 2-wire operation and does not include LEDs or internal end switches

or carbon buildup on the copper contacts

Contractor Ready: Features a standard 1/4" compression pilot connection and a manifold pressure tap for fast field diagnostics

Johnson Controls P128AA-17 Oil Control Refrigerant you must use the AG13BThe Johnson Controls P128AA 17 is a specialized electromechanical lube oil control designed to safeguard pressure lubricated refrigeration compressors from terminal damage. Functioning as a direct replacement for the P28AA 43, this unit accurately monitors net oil pressure by calculating the differential between the oil pump discharge and the compressor crankcase. It features dual 1 4" SAE flare connectors, eliminating the need for capillary tubing