York S1-026-32119-001 Pressure Switch

The York S1-026-32119-001 Pressure Switch is a critical safety component designed for precise draft monitoring in York, Luxaire, and Coleman furnace systems. This OEM replacement pressure switch is factory-calibrated to a 0.40" WC (Water Column) setpoint, ensuring the inducer motor establishes the necessary vacuum for safe combustion before the ignition sequence begins. Featuring a Single Pole Single Throw (SPST) configuration, it provides a reliable normally-open circuit that closes only when the specific pressure threshold is met. Built for heavy-duty HVAC applications, the S1-026-32119-001 utilizes a 1/4" barbed connection for a secure, leak-proof interface with standard pneumatic tubing. This HVAC pressure switch is engineered to prevent furnace operation during venting obstructions or inducer failures, protecting the heat exchanger from improper exhaust flow. For technical technicians, this 0.40" WC switch offers a direct-fit solution that eliminates field calibration issues and ensures system-wide reliability in residential and light commercial units.

• Precise 0.40" WC Calibration: Factory-set to ensure the exact draft requirement is met, preventing nuisance trips or ignition failures.
• OEM Compatibility: Designed specifically as a York S1-026-32119-001 replacement, ensuring full integration with original control boards.
• Durable SPST Contacts: High-quality SPST pressure switch mechanism provides consistent electrical switching over thousands of cycles.
• Standard 1/4" Barbed Port: Facilitates a fast, secure connection to existing inducer housing ports and sensing lines.

What are the symptoms of a failing pressure switch?
Technicians typically encounter a 3-flash or 4-flash diagnostic code on the control board. Common signs include the inducer motor running continuously without the igniter glowing, or the furnace short-cycling during the start-up sequence.

Can I use a switch with a different "WC rating?
No. Using a switch with a higher or lower rating than the 0.40" WC specification can result in unsafe operating conditions or frequent system lockouts. Always match the manufacturer’s exact setpoint for the specific model.

How do I test the S1-026-32119-001?
Use a manometer to verify the inducer is pulling at least 0.40" WC at the port. Then, use a multimeter to check for continuity across the terminals once the draft is established. If the manometer shows sufficient pressure but the switch remains open, the diaphragm or contacts have likely failed.

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.