The ASM01891 head pressure controller is specifically designed to maintain proper head pressure during cold outdoor temperatures

ensuring zero-clearance compatibility with legacy power-vented setups

This gasket is specifically designed for York terminal bolt configurations

using it at 115V will cause failure or insufficient starting torque

Lennox 93W01 Pressure Switch 340793-762 The ASM01891 head pressure controllerThe Lennox 93W01 is a critical safety component designed for professional HVACR maintenance and repair. This High Pressure Switch is an original equipment manufacturer (OEM) part, ensuring precise calibration and seamless integration into residential and commercial cooling systems. Engineered to protect the compressor from excessive system pressure, this auto reset high pressure switch activates at 590 PSI and automatically resets when pressure drops