this 155-175F flame rollout switch replacement is essential for troubleshooting "limit circuit open" 1-flash diagnostic codes on Lennox furnace units

This unit is compatible with all non-corrosive refrigerants and serves as a direct replacement for various Ranco and Penn pressure switches

this metering device is specifically designed for R-410A systems

Converting from a standard PSC to an ECM usually requires a conversion kit unless specifically supported by the air handler

Key Benefits of the ASCO 8220G401

York S1-025-41045-000 Wire Harness 322838-754 this 155-175F flame rollout switchThe York S1 025 41045 000 Wire Harness is a critical electrical lead designed for high precision communication between the HVAC pressure switch and the integrated control system. This 6 pin wire harness is engineered to handle technical signal transmission within residential and light commercial York units, ensuring the system accurately monitors refrigerant pressure states to prevent compressor damage. Built for durability in high cycle environments,