eliminating field modifications

The non-relay transmitter design ensures a direct response

Direct Replacement: Verified technical update for the DG125-3-16

allowing for rapid troubleshooting of ignition lockouts or flame sensing issues

Maintenance-Free Reliability: Employs a self-calibration algorithm that keeps the hardware accurate across long-term service intervals

York S1-031-09179-000 Board 30067439-890 eliminating field modificationsThe 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