York S1-031-09179-000 Board Els PW 17895 If your specific furnace or

If your specific furnace or boiler assembly requires longer runs

Engineered from high-temperature resistant composite materials

the FS-751-337 ensures efficient performance by accurately sensing positive

Install the Spirax-Sarco 69844 13WS 1" NPT Air Eliminator to solve persistent air binding issues in your pressurized liquid systems

The barbed fitting connectors are designed to securely grip 1/8" through 1/4" ID flexible plastic tubing

York S1-031-09179-000 Board Els PW 17895 If your specific furnace orThe York S1 031 09179 000 24V Relay Lock In Board is a critical control component designed for precise sequence management in commercial and residential HVAC systems. This genuine OEM part serves as the direct replacement for S1 031 09155 000, addressing common communication failures and relay chatter issues found in older board revisions. Operating on a standard 24V AC control circuit, this board functions as a lockout relay, preventing short cycling