York S1-024-34560-000 Pressure Switch

The York S1-024-34560-000 Pressure Switch is a critical OEM safety component engineered for precise inducer fan monitoring in specific York, Luxaire, and Coleman furnace models, including the GM9S080C16DH11A series. This dual-action control is factory-calibrated with a specific setpoint of .80" x .4" WC (Water Column), ensuring the combustion process only initiates when the draft inducer reaches the exact static pressure required for safe venting. As a veteran-grade HVAC replacement part, it utilizes a sensitive diaphragm to detect pressure differentials, preventing ignition if the flue is obstructed or the inducer is underperforming.

Designed for professional-grade reliability, the S1-024-34560-000 features a robust housing and high-conductivity terminals to maintain signal integrity with the furnace control board. Whether you are troubleshooting a 3-flash error code or performing a full system overhaul, this York pressure switch provides the exact 0.80" WC differential required to restore factory-spec timing and safety protocols to the heating cycle. Its direct-fit design eliminates the need for field modifications, ensuring a seamless furnace pressure switch replacement every time.

• OEM Precision: Prefabricated to .80" x .4" WC specifications for guaranteed compatibility with York GM9S chassis units.
• Enhanced Safety: Effectively prevents dangerous gas buildup by interlocking with the inducer assembly to verify proper exhaust flow.
• Durable Construction: Engineered to withstand the high-cycle demands of residential and light commercial forced-air systems.
• Rapid Diagnostics: Simplifies troubleshooting for "pressure switch stuck open" or "stuck closed" faults during mid-season service calls.

How do I verify if this switch is the cause of a '3-flash' error code?
Standard field testing involves checking for continuity across the terminals once the inducer motor reaches full speed. If the inducer fan is running but the switch fails to close at the 0.80" WC threshold, check for blockages in the vacuum tubing or the flue before replacing the component.

Can I use this switch for a .50" or .60" WC application?
No. Pressure switches are safety-critical and must be matched exactly to the manufacturer's setpoints. Using an incorrect WC rating can lead to inefficient combustion or hazardous operating conditions.

What causes these switches to fail prematurely?
Common culprits include moisture buildup in the sensing lines (often seen in high-efficiency 90%+ condensing furnaces), cracked vacuum hoses, or debris within the diaphragm housing.

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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.