York S1-024-35716-000 Pressure Switch

As a seasoned technician, you know that a mechanical failure in the draft sequence brings the entire call to a halt. The York S1-024-35716-000 Pressure Switch is a critical safety component designed specifically for York-built furnaces and rooftop units. This OEM York replacement part features a Single Pole Normally Open (SPNO) configuration and is factory-calibrated to 1.7" WC (Water Column). Engineered for a close-on-fall operation, the internal diaphragm ensures that the combustion circuit remains open until the inducer motor establishes the correct static pressure, effectively preventing ignition during venting blockages or motor failure. Its robust construction handles a wide temperature range from -40°F to 158°F, making it a reliable choice for commercial HVAC maintenance and residential repairs. When troubleshooting a system that won't ignite or is throwing a pressure switch lockout code, installing this genuine York furnace pressure switch eliminates the guesswork and ensures the equipment operates within its original safety parameters.

• Precision Calibration: Pre-set to 1.7" WC for accurate negative pressure detection, ensuring your high-efficiency systems cycle safely.
• OEM Compatibility: A direct-fit York HVAC part that saves time on the truck by matching factory mounting points and terminal positions.
• Safety Compliance: Designed as a close-on-fall switch, it provides essential protection against back-drafting and improper flue venting.
• Durable Construction: Built to withstand the harsh environments of burner compartments without premature diaphragm fatigue.

How do I verify if the S1-024-35716-000 is failing?
Use a manometer to check the draft produced by the inducer. If the vacuum exceeds 1.7" WC but the SPNO contacts fail to close (continuity check), the switch internal diaphragm or contacts have likely failed.

What causes a "Pressure Switch Stuck Open" error on a York furnace?
While the switch itself can wear out, always check for cracked vacuum tubing, a clogged collector box port, or bird nests in the flue pipe before replacing the part.

Can I use a higher-rated switch if this one isn't in stock?
No. Pressure switches are safety-critical components calibrated to specific equipment airflow requirements. Using a switch with a different WC rating can lead to unsafe combustion conditions or frequent nuisance trips.

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.