York S1-024-35275-000 Pressure Switch

The York S1-024-35275-000 is an OEM-specified negative pressure switch engineered for critical combustion airflow verification in forced-air furnaces. This component features a precise -0.35" WC set point and is configured as a single pole normally open switch (SPNO) designed to close on fall. It serves as a direct S1-024-35275-000 replacement for York, Luxaire, and Coleman systems, and it is identical to 9371VO-HD-0011. For technicians troubleshooting burner ignition failures, this HVAC inducer draft switch ensures that the induced draft motor is generating sufficient static pressure before the gas valve is energized. If you are wondering how to test a York pressure switch or looking for the exact York S1-024-35275-000 set point, this unit triggers at -0.35" WC to maintain safety protocols. Proper installation ensures the furnace control board receives the necessary signal to proceed with the firing sequence, preventing hazardous operation under restricted venting conditions or inducer failure. Understanding pressure switch close on fall meaning is vital here: the contacts close as the vacuum pressure reaches the calibrated threshold.

• Precise Calibration: Factory-set at -0.35" WC to ensure exact match with York/Johnson Controls pressure requirements.
• OEM Compatibility: Direct drop-in replacement for the 9371VO-HD-0011, eliminating the need for mounting bracket modifications.
• Application Specific: Hard-wired SPNO logic designed specifically for draft verification sequences.
• Robust Diaphragm: Engineered to withstand the thermal and pneumatic cycling of residential furnace operations.

Will this switch resolve a 3-flash error code on my York furnace?
A 3-flash code typically indicates a pressure switch stuck open. If the venting is clear and the inducer is pulling the rated vacuum, replacing a failed York furnace pressure switch often resolves this lockout.

Can I substitute this with a switch that has a different WC rating?
No. HVAC safety circuits are calibrated to specific static pressures. Using a switch with an incorrect rating can lead to incomplete combustion or dangerous operating conditions.

Does this switch include the tubing?
This is the switch assembly only. We recommend inspecting your existing silicone tubing for cracks or moisture blockages when installing the new 9371VO-HD-0011.

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.