York S1-024-19082-020 Sequencer Relay

The York S1-024-19082-020 Sequencer Relay is a high-performance 24V heat sequencer engineered to manage the staged activation and deactivation of electric heating elements within a furnace or air handler. Designed for direct OEM replacement, this heavy-duty relay prevents excessive current draw and electrical overload by staggering the startup of multiple heat banks. It operates on a 24VAC control circuit, featuring precise timing intervals: the primary M1/M2 poles typically open within 20-40 seconds, while the M3/M4 poles activate between 50-70 seconds. On the shutdown side, all poles are calibrated to close within 1-35 seconds to ensure rapid safety cutoffs. For contractors, the S1-024-19082-020 offers a robust solution for maintaining HVAC system integrity and optimizing sequential firing in residential and commercial units. This component cross-references with several legacy York controls and is vital for eliminating "cold blow" issues or flickering lights caused by simultaneous high-amperage loads.

• Optimized Power Management: Uses sequential timing to prevent electrical overloads when multiple heating elements engage.
• Universal 24V Logic: Compatible with various HVAC control boards and 24VAC thermostats for seamless integration.
• Reduced Equipment Wear: Minimizes mechanical and thermal stress on heating coils and breakers through controlled staging.
• Rugged Construction: Built to withstand the high-temperature environments of an electric furnace air handler.

• Why is my blower running but the heat is cold? This often indicates a failed sequencer relay that is stuck in the open position, preventing the heating elements from receiving high-voltage power.
• How do I test the S1-024-19082-020? Apply 24V power to the bottom terminals; if continuity is not established across the top load terminals within the specified 20-70 second window, the relay is faulty.
• Can this replace other sequencer brands? While designed for York units, it can replace relays with matching voltage ratings and terminal configurations, but always verify timing specs first.

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.