York S1-2845-3171 Limit Switch

The York S1-2845-3171 is a high-precision, automatic-reset HVAC limit switch engineered specifically for York heating systems and light commercial furnace applications. This OEM limit control operates with a fixed temperature range, featuring a switch opening temperature of 105°F and a switch closing temperature of 95°F. As a critical safety component, it monitors airflow temperatures to prevent heat exchanger damage or system overheating, ensuring your York furnace replacement parts meet factory performance standards.

Designed for contractors requiring reliable York furnace limit switch solutions, the S1-2845-3171 utilizes a rugged bimetal 1/2-inch disc construction for consistent thermal response. This auto limit switch is rated for 15 Amps at 120V AC, making it compatible with various residential and commercial air handlers. Field technicians prefer this genuine HVAC high limit switch for its exact form, fit, and operational reliability, reducing callbacks and maintaining the secondary heat exchanger's integrity during peak cycling.

• Precise Thermal Control: Tight 95-105°F set points ensure the system stays within safe operating parameters.
• Automatic Reset Function: Eliminates manual intervention by restoring the circuit once the plenum cools to 95°F.
• OEM Compatibility: Genuine York S1-2845-3171 part ensures direct integration with model 2865C666 and related equipment.
• Industrial-Grade Construction: Rated for a maximum operating temperature of 150°F to handle demanding furnace environments.
• Direct Fit Replacement: Standard mounting allows for rapid installation in existing limit control brackets.

Is the York S1-2845-3171 compatible with other brands?
This specific limit control is designed and calibrated for York HVAC equipment. Always verify the opening and closing temperatures against your unit's wiring diagram to ensure proper safety compliance.

What causes a limit switch to trip repeatedly?
Frequent tripping is typically symptomatic of restricted airflow. Check for dirty HVAC air filters, blocked return vents, or a failing blower motor, as these issues cause heat builds-up that exceed the 105°F threshold.

Does this switch require manual resetting?
No, our York S1-2845-3171 is an automatic reset limit switch. It will mechanically reconnect the electrical circuit once the sensor detects the temperature has dropped to the 95°F closing point.

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.