How do I test the York S1-025-41318-000 for continuity

Smith system

Simplified Calibration: Enables rapid field setpoint verification and adjustment

which translates to a precise

causing the controller to close the gas valve for safety

Nordyne 626619 Limit Switch How do I test theThe Nordyne 626619 Limit Switch is a critical safety component designed for precise thermal regulation in HVAC furnace systems. As an OEM replacement part, it ensures your equipment adheres to original manufacturer specifications, effectively managing blower cycles and preventing overheating. This auto reset limit switch features a 140F open and 100F close configuration, providing a reliable 40 degree differential to maintain stable heat exchanger