York S1-025-41322-000 Limit Switch

The York S1-025-41322-000 Limit Switch is a critical safety component designed for precise thermal monitoring within furnace and air handler heat exchangers. This OEM York furnace limit switch operates on an automatic reset logic with a calibrated temperature range of 120-160 degrees Fahrenheit. When the internal plenum temperature reaches the 160°F high-limit threshold, the bimetal disc triggers a circuit break to prevent heat exchanger fracturing or component damage. Once the system cools to 120°F, the switch automatically closes the circuit to resume normal operation. This high-limit safety control is a direct drop-in replacement for failed or drifting thermal switches in residential and light commercial HVAC equipment. Maintaining accurate furnace high limit switch settings is essential for preventing short-cycling and ensuring the inducer and blower motor cycles align with domestic safety standards. This HVAC limit switch replacement ensures long-term reliability and system integrity for professional contractors servicing York, Luxaire, and Coleman units.

• Precise Thermal Calibration: Provides exact 120F-160F trip points to prevent over-temperature conditions.
• Automatic Reset Functionality: Eliminates manual intervention by restoring power once temperatures stabilize within safe limits.
• Direct OEM Compatibility: Verified York S1-025-41322-000 replacement ensures correct hole alignment and electrical termination.
• Durable Bimetal Construction: Built for high-cycle reliability in high-heat environments to prevent nuisance tripping.

How do I test if a York limit switch is bad?
Confirm loss of continuity across the terminals when the switch is cold. If the circuit remains open at room temperature, the bimetal disc has failed or the internal contacts are pitted.

What causes a 160-degree limit switch to trip repeatedly?
Repeated tripping usually indicates restricted airflow, such as a clogged filter, undersized ductwork, or a failing blower motor, causing the heat exchanger to exceed safe operating temperatures.

Can I bypass the S1-025-41322-000 for troubleshooting?
Temporary bypassing is only for diagnostic pinpointing by qualified technicians; the unit must never be left operating without a functional limit switch as it poses a significant fire hazard.

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.