York S1-024-35267-000 Pressure Switch

The York S1-024-35267-000 Pressure Switch is a critical combustion safety component designed for precise monitoring of furnace inducer blower performance. This SPNO pressure switch (Single Pole Normally Open) is engineered to close on a fall in pressure, ensuring the combustion air sequence is fully established before the ignition cycle begins. Rated with a trip point range of 0.6/1.05 WC, this genuine Johnson Controls HVAC part provides the exact differential pressure sensing required for high-efficiency York, Luxaire, and Coleman furnaces. As a technician, you know that a failing York induction pressure switch is a primary cause of ignition failure codes; this S1-024-35267-000 replacement ensures the control board receives the necessary signal to proceed with the burner sequence. Its rugged diaphragm construction is built to withstand the heat and cycling of a residential furnace cabinet, maintaining calibration over thousands of cycles to prevent nuisance trips or dangerous operation.

Key Benefits

• Precise Pressure Calibration: Factory-set for 0.6/1.05 WC to match OEM airflow requirements for specific furnace heat exchangers.
• SPNO Configuration: Ensures a Close On Fall operation, providing a reliable safety interlock for the combustion blower.
• Direct OEM Compatibility: Eliminates the need for field modifications or universal brackets that can compromise installation speed and safety.
• Durable Construction: Designed to handle the high temperatures and vibration common within the burner compartment.

Common Questions

How do I troubleshoot a York furnace pressure switch? Check for a blocked vent pipe, restricted heat exchanger, or cracked vacuum tubing before replacing the switch. Use a manometer to verify if the inducer is pulling the required 1.05" WC to close the circuit.

Why is my burner not igniting on my York unit? If the inducer runs but the igniter does not glow, the S1-024-35267-000 may not be sensing sufficient negative pressure, preventing the control board from sending voltage to the gas valve.

What are the set points for S1-024-35267-000? This unit is specifically calibrated for a close setpoint of 0.6/1.05 WC differential, making it vital for exact airflow monitoring in compatible furnace models.

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.