Close-off pressure is actuator-dependent

Technicians should check for continuity across the terminals when the coil temperature is below the switch's closing setpoint

allowing a technician to reset the radiator valve lock mechanism for seasonal adjustments or system re-balancing

selecting the correct Sensus 243-12-2 or 243-8-2 orifice size is essential to prevent hunting and ensure stable downstream pressure

York S1-025-43269-000 Control 319847-401 Close-off pressure is actuator-dependentThe York S1 025 43269 000 Control is a high limit temperature control switch designed for precision thermal monitoring in York, Luxaire, and Coleman HVAC systems. Engineered for reliability in high heat environments, this limit switch features a fixed 245F open and 215F close setting, providing essential overheat protection to prevent heat exchanger damage or unsafe operating conditions. As an OEM York replacement part, it ensures direct compatibility