York S1-7142-3091 Limit Switch

The York S1-7142-3091 Limit Switch is a critical safety component designed for precise thermal regulation in York, Coleman, and Luxaire gas furnaces. This SPST automatic reset limit switch functions with a 110-150F temperature range, opening the circuit at 150°F and automatically closing at 110°F to prevent heat exchanger overheating. As a direct OEM replacement for 626245 and 626246, it maintains factory specifications for high-limit protection. Engineered for inducer motor and burner assembly safety, this bimetal disc thermostat ensures the system stays within safe operating parameters during ignition and combustion sequences. For field technicians, this HVAC replacement part offers a drop-in solution for limit switch tripping issues, providing reliable thermal cut-off performance without the need for manual resets or bracket modifications. Proper installation ensures the furnace avoids over-temperature lockout codes while maintaining consistent airflow temperature monitoring.

• Precise Thermal Calibration: Fixed 150°F open and 110°F close settings ensure accurate furnace high-limit protection.
• Automatic Reset Functionality: Eliminates manual intervention by restoring circuit continuity once the plenum temperature stabilizes.
• OEM Compatibility: Specifically engineered as a substitute for York 626245 and 626246, ensuring exact fitment in residential furnaces.
• Durability: Constructed with high-grade bimetal components to withstand frequent thermal cycling within the heat exchanger cabinet.

Is the S1-7142-3091 a direct fit for older 626245 models?
Yes, this is the official manufacturer-designated direct replacement limit switch, utilizing the same mounting footprint and terminal orientation as the 626245 and 626246 units.

What causes this limit switch to trip frequently?
Repeated tripping is often indicative of restricted airflow, typically caused by a dirty air filter, blocked ductwork, or a failing blower motor, forcing the heat exchanger to reach the 150°F cutout point.

Can this be used in other furnace brands?
While it is an OEM York part, it can be used in Luxaire and Coleman systems that specify these exact thermal setpoints and physical dimensions.

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.