York S1-024-35273-000 Switch

The York S1-024-35273-000 Switch is a critical safety component designed for precise draft pressure monitoring in York, Coleman, and Luxaire gas furnaces. This dual-stage pressure switch features a Single Pole Normally Open (SPNO) configuration and is engineered for close-on-fall operation. The high-fire switch is calibrated at -0.40" WC, while the secondary switch is rated for -0.25" WC. This multi-stage calibration ensures the inducer motor maintains the specific vacuum required for safe combustion and venting across different firing rates. In the field, this HVAC pressure switch is the primary defense against venting obstructions, inducer failure, and cracked heat exchangers. When the inducer creates the necessary negative pressure, the internal diaphragm closes the circuit, signaling the integrated furnace control to proceed with the ignition sequence. This OEM York replacement part (also referenced as 106676) ensures furnace pressure switch compatibility and maintains the high-efficiency performance standards of original equipment.

Key Benefits:

• Dual-Stage Calibration: Expertly tuned at -0.40 and -0.25 inches of water column to support multi-stage heating systems.
• Precise Safety Monitoring: Prevents furnace ignition if proper draft speeds or vacuum levels are not achieved, protecting against carbon monoxide risks.
• OEM Standards: Direct replacement for York S1-02435273000, ensuring zero-mod install for contractors.
• Durable Construction: High-tolerance internal diaphragm designed to handle the rapid state transitions required by modern furnace control boards.
• Wide Compatibility: Specifically engineered for York, Coleman, and Luxaire units, serving as a reliable cross-reference for part 208Z42.

Common Questions:

Does this switch replace part number 106676?
Yes, the York S1-024-35273-000 is the direct OEM replacement for part number 106676 and 9371-VO-HD-0009.

What does "Close On Fall" mean for this installation?
In this context, close on fall refers to the switch making electrical contact as the pressure "falls" further into a negative vacuum (becoming more negative) to reach the set-points of -.25" and -.40" W.C. once the inducer motor is energized.

How do I troubleshoot a 3-flash error code related to this part?
A 3-flash code typically indicates the pressure switch is stuck open. Check for a blocked flue, water in the pressure tubing, or a cracked inducer housing before replacing the switch, as these external factors often mimic switch failure.

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.