York S1-025-41336-000 Limit Switch

The York S1-025-41336-000 Limit Switch is a critical OEM replacement part engineered for high-precision thermal monitoring in residential and light commercial furnaces. This auto-reset limit switch features a factory-calibrated set point of 145°F on the open circuit and 105°F for the closing threshold (145Op 105Cl). Designed for high-reliability applications, this Source 1 furnace safety control prevents heat exchanger damage by interrupting the gas valve circuit if supply plenum temperatures exceed safe operating limits. Use this genuine York furnace limit switch to address common issues like short-cycling, "limit circuit open" error codes, or constant blower operation. As a veteran HVAC technician knows, maintaining the correct limit switch 145 degree rating is essential for system safety and airflow integrity. This 0.04 lb component serves as a direct drop-in for York Coleman HVAC equipment, ensuring your furnace operates within its designated thermal envelope without premature tripping or failure under standard static pressure loads.

• Precision Thermal Calibration: Features 145°F open and 105°F close specs to maintain strict safety standards.
• Automatic Reset Logic: Eliminates the need for manual restarts after the plenum cools to safe levels.
• Direct OEM Compatibility: Ensures seamless fit and electrical matching for York, Luxaire, and Coleman brands.
• Safety Compliance: Acts as a primary fail-safe against heat exchanger overheating and potential fire hazards.

• Why is my York furnace short-cycling or shutting off early? This typically points to a tripped York S1-025-41336-000. Check for dirty filters or restricted airflow first; if the airflow is clear and the switch still trips, the internal bi-metal disc may be fatigued and require replacement.
• What does 145Op 105Cl mean on a limit switch? This signifies that the switch will open (break the circuit) at 145°F to stop the burners and close (completed circuit) once the temperature drops to 105°F.
• Can I bypass this switch for testing purposes? Never bypass a safety limit during permanent operation. Doing so removes critical protection against overheating, which can lead to cracked heat exchangers.

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.