Trane CNT3159 Pressure Switch 318518-761 and all necessary wiring harnesses—including

and all necessary wiring harnesses—including 5-pin and 12-pin configurations—to ensure proper hot surface ignition timing and flame sensing

Is the R600-1 suitable for systems with electronic ignition

Is the adapter required for all models

Can the A-4412-1 be used with non-Johnson Controls pneumatic systems

Trane CNT3159 Pressure Switch 318518-761 and all necessary wiring harnesses—includingThe Trane CNT3159 Pressure Switch is an essential high pressure cut out designed for precise refrigerant circuit monitoring in residential and light commercial HVAC units. This SPNO (Single Pole Normally Open) switch serves as a critical safety component, engineered to open the circuit when system pressure reaches 400 PSI and reset upon falling to 250 PSI. Built for compatibility with modern high pressure refrigerants like R 410A, the CNT3159 prevents