York S1-025-32606-000 Limit Switch

As a technician, you know that a compromised York furnace limit switch isn't just a nuisance—it’s a safety violation. The York S1-025-32606-000 is an OEM HVAC part designed for high-performance temperature monitoring in residential and light commercial equipment. This SPST temperature responsive control features an auto-reset function with a precise 3-inch insertion probe, ideal for furnace heat exchanger and airflow sensing. When temperatures hit the 210°F ceiling, the switch opens to kill the burners, then automatically closes at 180°F to resume the sequence of operation. Rated for York 180-210F Limit Switch standards, this component is frequently found in high-efficiency gas furnaces and F2FC series fan coil units. Utilizing a genuine York replacement part ensures the bypass and safety loops remain intact, preventing the short-cycling and blower run-on issues common with aged or fouled sensors. This high-limit safety switch is the direct professional solution for maintaining system integrity and meeting strict HVAC safety control specifications without risk of early failure from poor calibration.

• Precise Thermal Calibration: Engineered to open at 210°F and close at 180°F for reliable system protection.
• OEM Integrity: A genuine York/Source 1 component ensuring perfect fitment and electrical compatibility with factory control boards.
• Automatic Reset: Eliminates manual intervention after a temporary overheat condition, reducing nuisance service calls.
• Durable Construction: Built with high-grade temperature-rated materials to withstand the heavy cycling of modern furnaces and fan coils.
• 3-Inch Probe: Optimized insertion length for accurate sensing in the supply plenum or heat exchanger housing.

How do I confirm the York S1-025-32606-000 is failing?
If the furnace blower runs continuously while the burners remain off, or if the unit is "short cycling" (shutting down before the thermostat is satisfied), the limit switch is likely stuck open or tripping prematurely. Use a multimeter to check for continuity across the terminals when the system is cool.

What causes this limit switch to trip frequently?
Most frequent "open limit" errors are caused by restricted airflow. Before replacing the switch, check for a clogged air filter, dirty blower wheel, or blocked return ducts, as these issues force the heat exchanger to exceed the 210°F threshold.

Can I use this as a universal HVAC replacement part?
While the 180-210F range is common, we recommend using this specific part only for York, Coleman, and Luxaire equipment. Always verify the part number against your model’s technical manual to ensure the probe length and thermal settings match the original design.

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.