this switch is factory-calibrated to actuate at 1

preserving outdoor coil integrity

Its shaded pole design and integrated overload protection provide the reliable starting torque and thermal safety necessary for consistent heating cycles

Common Questions for HVAC Professionals What is the difference between terminals 1 & 3 and 1 & 2 on the 3L03-190

effectively extracting flue gases to ensure a clean light-off and maintaining the pressure required to close the furnace pressure switch

York S1-025-49697-000 Sensor 323269-701 this switch is factory-calibrated toThe York S1 025 49697 000 Sensor is a critical OEM replacement temperature sensor designed for precision monitoring in HVAC control systems. This high accuracy thermistor assembly features a 10 foot lead length, providing the necessary reach for routing through internal cabinets to secure, dry connection points. Equipped with a factory integrated mounting clip and a female connector, it ensures a secure mechanical fit to coil headers or suction lines,