SOURCE S1-02419082028 Relay Sequencer Module

York S1-02419082028 is a 24V heat sequencer relay designed for York HVAC equipment, functioning as the dedicated sequencing module that energizes a predefined order of heating relays to coordinate staged heat in York packaged units and rooftop units, ensuring heating stages engage in the correct sequence as control signals change. As an official OEM replacement part for York HVAC systems, the S1-02419082028 matches the original equipment specification and is designed to operate with standard 24V control circuits and heater relays commonly found in York installations, simplifying compatibility and service replacement. This sequencer is typically used in applications where multiple heating stages must be activated in a controlled progression, integrating into York's RTU or packaged-unit control circuits to help maintain comfort, efficiency, and safe operation of heating elements. Distributors and repair-part suppliers list the S1-02419082028 as the 24V heat sequencer relay for York equipment, reflecting its ongoing availability in the replacement market and its status as the direct OEM-style solution for correct sequencing of heat stages.