A tripped switch often indicates restricted airflow

Always verify the furnace data plate and manifold requirements to ensure this

Universal Compatibility: Standard Type 184 footprint allows for easy replacement of existing 120V fan control relays

while the precision-ground tip ensures a snug fit on the #4-40 hex screws commonly found in HVACR pneumatic systems

These are the most common sizes found on residential and light commercial equipment for accessing service ports and adjusting refrigerant flow valves

York S1-025-29041-002 Limit Switch A tripped switch often indicatesThe York S1 025 29041 002 is a professional grade OEM furnace limit switch engineered for precision thermal regulation in York, Luxaire, and Coleman heating systems. This automatic reset limit control features a 3 inch insertion probe, making it an essential safety component for monitoring high limit temperatures within the furnace plenum. Designed for high cycle reliability, the switch is calibrated to open at 150F to prevent heat exchanger damage