York S1-024-35659-000 Limit Control

The York S1-024-35659-000 Limit Control is a precision-engineered L160-40 temperature limit switch designed for critical safety regulation in residential and light commercial HVAC systems. This OEM York replacement part serves as a primary high-limit safety, preventing heat exchanger damage by interrupting the heating circuit when temperatures reach the 160°F trip point. Once the system cools to 40°F, the control automatically resets to restore operation. Field technicians typically utilize this component within 4HK series electric heat kits and specific York furnace models to ensure HVAC high limit protection and system reliability.

Engineered for high-cycle durability, the S1-024-35659-000 provides a fixed 160-degree opening temperature and a 40-degree closing temperature, maintaining strict operational tolerances. Proper furnace limit switch replacement is essential for avoiding premature blower cycling or system lockout. This control is a direct fit for S1-4HK06500806 configurations, offering seamless integration with existing wiring harnesses and mounting brackets without the need for field modification.

• Precise Thermal Calibration: Factory-set 160°F open and 40°F close points eliminate the need for manual adjustment during installation.
• Direct OEM Compatibility: Specifically designed for York S1-4HK06500806 heat kits, ensuring correct form, fit, and electrical terminal alignment.
• System Safety Enhancement: Rapidly detects overheating conditions to mitigate risk to the heat exchanger and surrounding components.
• Reliable Reset Logic: Features a 40°F differential reset to prevent rapid on/off cycling of the heating elements.

What causes a York 160-40 limit switch to trip frequently?
Repeated tripping is usually indicative of restricted airflow, often caused by a dirty air filter, blocked return ducts, or a failing blower motor. If the York S1-024-35659-000 opens, it is performing its safety function to prevent furnace overheating.

Is the S1-024-35659-000 compatible with other brands?
While some limit controls share similar temperature specs, this model is engineered for York, Luxaire, and Coleman equipment. Techs should verify the specific MFR part number before installation to ensure electrical clearance and mounting depth.

How do I test this limit control for continuity?
With power disconnected and the part at room temperature (below 160°F), a multimeter should show 0 ohms (continuity). If the switch is open at room temperature, it is defective and requires immediate HVAC part replacement.

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.