York S1-024-35272-000 Pressure Switch

When you're troubleshooting a York furnace that isn't initiating the ignition sequence, the York S1-024-35272-000 Pressure Switch is the first safety component to check. This genuine OEM York replacement part is engineered to monitor the negative pressure generated by the draft inducer motor, ensuring the venting system is clear before allowing the gas valve to open. Rated at -0.54" WC, this is a Single Pole Normally Open (SPNO) switch designed to close on fall, meaning it completes the 24V circuit only when the required vacuum threshold is reached.

As a veteran tech knows, using the correct furnace pressure switch is critical for avoiding nuance trips or unsafe combustion conditions. The S1-024-35272-000 is built for precise differential pressure sensing, maintaining the tight tolerances required by high-efficiency York, Coleman, and Luxaire units. Whether you're dealing with a "pressure switch stuck open" error code or a failing diaphragm, this air pressure switch provides the specific -0.54" WC setpoint necessary to restore safe furnace operation in accordance with original manufacturer specifications.

Key Benefits

• OEM Precision: Guaranteed York S1-024-35272-000 technical specifications ensure exact setpoint accuracy at -0.54" WC.
• System Safety: Prevents furnace operation if the inducer motor fails or the venting system is restricted.
• Direct Compatibility: Designed for an exact fit in York furnace parts assemblies, including models from Coleman and Luxaire.
• Electrical Reliability: High-quality SPNO switch contacts provide clean 24V signal transmission to the integrated furnace control board.

Common Questions

How do I test the York S1-024-35272-000 with a multimeter?
With the furnace calling for heat and the inducer motor running, set your meter to volts AC. Place probes on both terminals; a functioning switch will show 0V once it closes. If you see 24V, the switch is open, indicating a vacuum issue or a failed internal diaphragm.

What does 'Close on Fall' mean for this specific model?
In HVAC pressure controls, 'Close on Fall' refers to the switch closing its contacts when the negative pressure (vacuum) drops to the specified -0.54" WC level during the inducer motor startup.

Will this switch fix a 3-flash error code on my York furnace?
A 3-flash code typically indicates a pressure switch stuck open. While the switch itself may be faulty, always verify that the inducer port is clear and the flue isn't obstructed before replacing the part.

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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.