York S1-025-32607-000 Limit Switch

The York S1-025-32607-000 is a heavy-duty furnace high limit switch engineered for precise thermal monitoring within the heat exchanger canopy. This automatic reset limit is calibrated with an opening threshold of 185°F and a closing differential at 155°F, ensuring the burner circuit is interrupted if internal temperatures exceed safe operating parameters. Featuring a 3-inch insert probe, this component provides accurate real-time sensing within the plenum airflow. As a critical HVAC replacement part for York, Coleman, and Luxaire systems, it is essential for diagnosing York furnace overheating issues or frequent cycling. When evaluating S1-025-32607-000 compatibility, technicians should verify the 30-degree differential and insertion depth to ensure the sensor is positioned correctly relative to the heat exchanger. This L185-30 switch is a standard safety control for maintaining the integrity of the furnace sequence of operation during high-static or restricted airflow conditions.

• Precise Thermal Calibration: Opens at 185°F and resets at 155°F to prevent heat exchanger fatigue.
• OEM Specification: Direct replacement for Source 1 components, ensuring proper fitment and electrical ratings.
• 3-Inch Probe Depth: Optimized insertion for accurate sensing in various residential furnace cabinet sizes.
• Automatic Reset Logic: Eliminates the need for manual intervention once the plenum cools to safe levels.

How do I test a York limit switch for failure?
Using a multimeter set to continuity, check the terminals while the switch is cool. A functioning S1-025-32607-000 should show a closed circuit. If the circuit remains open at room temperature, the bimetal disc has failed.

Why is my York furnace tripping the high limit?
Frequent trips usually indicate restricted airflow, often caused by a dirty filter, blocked return air, or a failing blower motor, rather than a faulty switch itself.

Can this switch be used in horizontal or upflow configurations?
Yes, provided the 3-inch probe depth is compatible with the specific furnace model's internal clearance and airflow path as specified by the manufacturer.

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.