York S1-025-22273-001 Limit Switch

The York S1-025-22273-001 Limit Switch is a critical OEM safety component designed for precise thermal management within HVAC furnace systems. This SPST (Single Pole Single Throw) fixed-temperature control operates on an auto-reset logic, ensuring the burner circuit opens when temperatures reach the 150°F trip point and automatically closes once the system cools to 110°F. Engineered for York, Coleman, and Luxaire gas furnaces, this high-limit switch serves as the primary line of defense against heat exchanger overheating, often caused by restricted airflow or blower motor failure. Replacing a faulty L150-40 limit control with this genuine York replacement part ensures the unit maintains factory-specified safety parameters and prevents furnace short-cycling. The switch features standard male spade terminals for high-continuity electrical connections, facilitating a drop-in HVAC repair for seasoned contractors and technicians troubleshooting overheating error codes.

• OEM Compatibility: Guaranteed fit for specific York and Coleman models, eliminating the risks associated with generic universal limit switches.
• Precise Thermal Calibration: Features a factory-set 150°F open / 110°F close range to ensure consistent furnace safety sensor performance.
• Auto-Reset Functionality: Automatically restores the circuit after the temperature is within safe operating limits, reducing unnecessary system lockouts.
• Durable SPST Contacts: Designed for high-duty cycles to withstand the rigors of residential and commercial heating demands.

What causes this limit switch to trip frequently?
Repeated tripping is typically a symptom of airflow restriction. Check for a clogged air filter, blocked return grilles, or a failing blower motor that isn't moving enough air across the heat exchanger.

How do I test the York S1-025-22273-001 for failure?
Using a multimeter, check for continuity across the terminals when the switch is cool. If the switch is open (no continuity) at room temperature, the internal bimetal disc has failed and the component must be replaced.

Can I use this switch in a mobile home furnace?
Yes, this model is frequently found in Coleman mobile home gas furnaces. Always verify the temperature stamping on the original part matches the 150-40 rating before installation.

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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.