York S1-025-38412-000 Limit Switch

The York S1-025-38412-000 Limit Switch is a critical safety component designed for precise temperature regulation in HVAC furnace systems. This OEM York replacement part features an auto-reset function and is engineered to monitor high-limit thresholds within a specific 100-125F temperature range. Designed for professional installation, it ensures the burner circuit is interrupted if internal plenum temperatures exceed safe operating parameters, preventing equipment damage and maintaining system integrity. As a genuine furnace high limit switch, the S1-025-38412-000 provides the exact calibrated response time required for York heating equipment, Coleman, and Luxaire residential units. Its automatic reset limit logic eliminates the need for manual intervention after a temporary overheat condition, provided the system returns to its normal 100°F to 125°F operating window. Technicians should verify HVAC part compatibility using model and serial numbers to ensure this specific thermal cutoff matches original factory specifications for the air handler or furnace assembly.

• Factory Calibrated Precision: Actuates reliably between 100°F and 125°F to maintain safe furnace operation.
• Auto-Reset Functionality: Automatically restores system continuity once temperatures drop below the set differential.
• OEM Compatibility: Direct replacement for York S1-025-38412-000, ensuring seamless fit in Johnson Controls family units.
• Enhanced Safety: Acts as a failsafe to mitigate risk of heat exchanger damage due to airflow restrictions.

• What causes this limit switch to trip? Common causes include restricted airflow from dirty filters, a failing blower motor, or blocked return air ducts.
• Is this switch compatible with other brands? While designed for York, it is also found in many Coleman and Luxaire furnaces; always cross-reference the part number.
• Can I use a switch with a different temperature rating? No. Using a switch with an incorrect temperature range can lead to safety hazards or frequent nuisance tripping.

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.