York S1-025-41319-000 Limit Switch

The York S1-025-41319-000 Limit Switch is a critical furnace high limit control engineered for precise thermal monitoring within York, Luxaire, and Coleman residential heating platforms. This OEM York replacement part features a factory-calibrated fixed temperature setting, designed to open the electrical circuit at 165 degrees Fahrenheit and automatically reset once the plenum temperature cools to 125 degrees Fahrenheit, providing a standard 40-degree differential. As a primary HVAC safety switch, this component protects the heat exchanger from structural damage by interrupting the burner sequence if internal temperatures exceed safe operating parameters due to restricted airflow or blower failure. The S1-025-41319-000 is an auto-reset safety switch, ensuring the system resumes operation once safe conditions are met without requiring a manual reset. For contractors, utilizing this 165 degree limit switch ensures the appliance maintains its original design specifications and safety ratings during service and repair modules.

• Fixed Temperature Precision: Calibrated at 165°F Open and 125°F Close for consistent high-limit protection.
• OEM Compatibility: Genuine Johnson Controls/York component ensures exact fitment and terminal alignment in compatible furnace models.
• Automatic Reset: The A/R functionality restores the circuit automatically once the system reaches a safe 125°F threshold.
• Heavy-Duty Construction: Built to withstand high-cycle thermal environments within the heat exchanger cabinet.

Common Questions

What causes a York furnace to trip the 165-degree limit switch?
Tripping is typically a symptom of restricted airflow. Common culprits include a heavily restricted air filter, blocked return air grilles, an undersized duct system, or a failing indoor blower motor. If the switch opens, it is performing its safety function to prevent overheating.

Is the S1-025-41319-000 a manual or automatic reset switch?
This is an automatic reset (A/R) switch. Once the temperature drops below the 125°F closing point, the internal bimetal disc will snap back to the closed position, allowing the furnace to attempt a new ignition cycle.

Can I replace a 165-degree limit with a higher temperature rating?
No. You must never increase the temperature rating of a limit switch. Doing so can lead to heat exchanger fatigue, cracked components, and potential fire hazards. Always replace with the exact OEM-specified temperature rating.

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.