Tecumseh 84026-2 Pressure Switch 321042-401 a factory wall controller is

a factory wall controller is recommended for full variable-speed capability and technical diagnostic access

When replacing this permanent split capacitor motor

enabling you to break two separate circuits or trigger an alarm while simultaneously shutting down a burner or pump

and Payne modular units

Reduced Installation Labor: Modular 5-pin plug connections allow for instant expansion without point-to-point field wiring between stages

Tecumseh 84026-2 Pressure Switch 321042-401 a factory wall controller isThe Tecumseh 84026 2 Pressure Switch is a mission critical safety control designed for high performance HVACR systems. Engineered as a 1 4 inch flare connection Low Pressure Switch, this component provides essential compressor protection by monitoring suction line pressure and preventing operation under hazardous low charge or vacuum conditions. As an automatic reset pressure switch, it ensures seamless system recovery once safe operating pressures