York S1-024-19082-031 Sequencer Relay

For field technicians and contractors maintaining York air handlers and electric furnaces, the York S1-024-19082-031 Sequencer Relay is a vital component for staged heating control. This 24V heat sequencer, frequently cross-referenced as 208V42, manages the timing of resistive heating elements to prevent high-amperage inrush from tripping circuit breakers. Built with a robust bimetal heater coil, this relay provides a consistent timing sequence of 1 to 110 seconds for both 'on' and 'off' cycles, ensuring a smooth transition during heat calls and post-cycle fan cooling.

When diagnosing furnace sequencer troubleshooting issues, this OEM replacement addresses common failures like stuck contacts or internal heater coil burnout. It is specifically engineered to fit York models using part 2CE04501046A. The multi-terminal design facilitates easy field wiring for HVAC sequencer wiring diagrams, providing the reliable staging necessary to protect the transformer and main electrical bus from sudden loads.

• Precise Staging: Features a 1-110 second delay window to manage electric furnace heating elements without overloading the electrical system.
• OEM Compatibility: Exact replacement for York S1-024-19082-031, maintaining the specific thermal characteristics required for 24V AC heating circuits.
• Universal Mounting: Compact footprint allows for installation in various cabinet configurations across York unitary product lines.
• Bimetal Reliability: Designed to withstand thousands of cycles, reducing the frequency of no-heat service calls.

Common Questions & Contractor Insights

Wait, how do I know if the sequencer is actually bad?
Verify 24V across the bottom heater terminals. If voltage is present but the load contacts don’t close after 120 seconds, the bimetal strip or internal heater has failed. Conversely, if the fan or elements stay on indefinitely after the call for heat ends, the contacts are likely welded shut.

Can I use this for any 24V electric furnace?
While the S1-024-19082-031 is standardized for many 24V systems, always check the timing specs on the side of the existing relay. This unit is optimized for York equipment requiring a 1-110 second timing range to ensure the blower keeps running until the elements cool down.

What is the primary function of the delay?
It prevents the massive current draw of multiple heat strips from hitting the line all at once and allows the heat exchanger to reach temperature before the blower starts, preventing cold drafts.

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.