York S1-025-27747-011 Rollout Switch

The York S1-025-27747-011 Rollout Switch is a critical OEM replacement part designed for high-performance gas furnace safety. Engineered to trigger at a 250-degree Fahrenheit open temperature, this manual reset rollout switch serves as a final line of defense against dangerous flame rollout conditions. When the internal sensor detects excessive ambient heat near the burner box—often caused by a cracked heat exchanger, blocked flue, or insufficient combustion air—it interrupts the electrical circuit to the gas valve, forcing a system shutdown to prevent equipment damage and ensure site safety.

This York furnace replacement part is built for seamless compatibility with York, Coleman, and Luxaire gas-fired systems. Unlike automatic limit controls, the manual reset design requires a qualified technician to troubleshoot and clear the underlying fault before the system can be restarted, making it an essential component for furnace troubleshooting and preventative maintenance. Its precision-calibrated thermal response ensures the system stays within operational tolerances, providing contractors with a reliable solution for emergency furnace repair and burner box safety.

• Precision Safety Control: Calibrated to open exactly at 250°F to protect the system from heat-induced failure.
• Manual Reset Mechanism: Ensures thorough HVAC system diagnostics are performed before the furnace is brought back online.
• OEM Engineering: Guaranteed fit for York, Coleman, and Luxaire furnaces, eliminating the risks associated with generic aftermarket switches.
• Durable Construction: Built to withstand the harsh thermal environment of the burner assembly for long-term reliability.

Why does my rollout switch keep tripping?
A tripped switch usually indicates a serious airflow or combustion issue, such as a cracked heat exchanger, soot buildup, or a failing draft inducer motor that is not pulling flames correctly into the heat exchanger.

Can I bypass a manual reset switch for testing?
No. Bypassing safety controls like the York S1-025-27747-011 is unsafe and violates technical standards. The switch is a safety device intended to prevent fires or carbon monoxide leakage.

Is this switch compatible with my York furnace?
This specific model is the standard 250F rollout switch for many residential York and Source1 units. Always cross-reference your specific model number to ensure the temperature rating matches your system’s specifications.

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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.