York S1-031-09179-000 Board 30067439-890 Does the ring base require

Does the ring base require removing the thermostat from the wall

As a field-proven VAL029 replacement

Built with a Single-Pole Double-Throw (SPDT) switch

As a veteran-grade 24V Gas Valve

York S1-031-09179-000 Board 30067439-890 Does the ring base requireThe 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