the CNT2239 is specifically engineered by Trane to replace the Johnson Controls A19ACA-17 series

the internal mechanism can be fully serviced or replaced without breaking the secondary piping connections

which can lead to stress fractures around the drainage ports

it can be swapped by removing the retaining screw/nut on the valve stem without opening the sealed refrigeration system

This OEM pressure switch features a durable diaphragm designed for the high-cycle demands of modern HVACR systems

Carrier 339855-701 Harness Assembly 321042-401 the CNT2239 is specifically engineeredThe Carrier 339855 701 Harness Assembly is a critical OEM component designed for high efficiency integrated furnace control systems. This main wire harness facilitates seamless communication between the IFC control board, inducer motor, and safety limit switches. Field technicians frequently utilize this specific Carrier furnace wiring replacement to resolve intermittent connectivity issues or voltage drops caused by vibration induced terminal wear or