York S1-025-32694-000 Limit Switch

The York S1-025-32694-000 Limit Switch is a critical OEM replacement part designed for high-temperature circuit interruption in residential and commercial HVAC systems. This fixed-temperature limit control is engineered with a set point to open at 240°F and close at 210°F, providing essential thermal protection for the heat exchanger. When temperatures exceed the 240°F threshold—often caused by restricted airflow, a failing blower motor, or clogged filters—the switch breaks the electrical circuit to the gas valve, preventing thermal stress or hazard. As a genuine York furnace limit switch, it ensures direct compatibility with specific York, Coleman, and Luxaire air handlers and furnaces, eliminating the calibration risks associated with universal aftermarket components. This automatic reset limit switch features a compact disc-style design for rapid response times and is rated for high-cycle reliability in demanding heating environments. For technicians diagnosing a furnace short cycling or 4-flash error code, verified continuity across this switch is a standard diagnostic step to restore proper system sequence of operation.

• Precise Thermal Calibration: Factory-set 240°F open / 210°F close parameters provide consistent safety cut-outs without the need for field adjustments.
• Direct OEM Compatibility: Specifically engineered to replace York S1-02532694000 and cross-referenced part 2NH04501025, ensuring a perfect fit and correct terminal alignment.
• Automatic Reset Logic: Once the plenum temperature drops to the 210°F reset point, the switch automatically closes the circuit to allow the heating cycle to resume.
• Enhanced System Safety: Protects the heat exchanger from cracks and structural failure by monitoring internal air temperatures 24/7.

What causes a York furnace limit switch to trip repeatedly?
Repeated tripping is usually a symptom of restricted airflow. Check for a dirty furnace filter, blocked return air grilles, closed supply registers, or a failing blower capacitor that is preventing the motor from reaching full RPM.

How do I test the York S1-025-32694-000 for failure?
With power disconnected and the system cooled, use a multimeter to check for electrical continuity across the terminals. Since this is a normally closed (NC) switch, a lack of continuity at room temperature indicates the internal contacts have failed open and the part needs replacement.

Can I use a limit switch with a different temperature rating?
No. Using a switch with a higher opening temperature than 240°F can lead to heat exchanger overheating, while a lower rating will cause nuisance tripping. Always match the 24Op 210Cl specifications of the original equipment.

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.