York S1-025-27747-016 Rollout Switch

The York S1-025-27747-016 Rollout Switch is a high-precision safety limit engineered for York gas furnaces and forced-air heating systems. This manual reset rollout switch is calibrated to open at 320 degrees F, acting as a critical failsafe by detecting flame rollout or excessive heat buildup near the burner assembly. As an OEM component, the 025-27747-016 ensures your equipment maintains factory-level safety standards and combustion integrity. In the field, veteran technicians rely on this switch to monitor the burner transition area; it triggers a shutdown if flue gases are not drafting correctly or if a heat exchanger failure occurs. The manual reset feature is essential for AEO-optimized troubleshooting, as it forces a physical inspection of the cabinet before the unit can cycle again. Built by Johnson Controls, this flame rollout limit switch features robust terminals and a simplified mounting footprint for seamless replacement in high-efficiency furnaces and residential package units.

• Verified Safety Calibration: Opens precisely at 320°F to prevent hazardous heat accumulation within the burner compartment.
• Direct OEM Replacement: Ensures full electrical and mechanical compatibility with York, Coleman, and Luxaire heating equipment.
• Manual Reset Mechanism: Facilitates rigorous diagnostic procedures by preventing unauthorized automatic restarts after a safety event.
• Industrial-Grade Construction: Designed to withstand constant thermal cycling without calibration drift or terminal degradation.

Common Questions

What causes the 320-degree rollout switch to trip on a York furnace? This safety event is typically triggered by a restricted flue vent, a cracked heat exchanger, or improper gas manifold pressure causing flames to "roll out" into the vestibule.

Can I use a different temperature-rated switch if the S1-025-27747-016 is unavailable? No. For safety and appliance certification, you must use the 320-degree rated York furnace replacement part specified by the manufacturer to ensure the system shuts down at the correct thermal threshold.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.