York S1-024-19082-703 Sequencer Relay

The York S1-024-19082-703 Heat Sequencer Relay is a vital component for staged heating control in residential and commercial air handlers and electric furnaces. This 1V–3V heat sequencer is an authentic OEM replacement part engineered to manage the activation of heating elements, preventing simultaneous high-amperage draws that can trip breakers or damage sensitive electrical circuits. Utilizing a PTC heater design, this relay ensures precise timing for the "on" and "off" cycles, providing the reliable staging required to maintain consistent discharge air temperatures and system efficiency.

Designed for seamless integration into York, Coleman, and Luxaire equipment, the S1-024-19082-703 features a standard mounting footprint and quick-connect terminals to streamline field installation. This HVAC sequencer relay is built to withstand the high-cycle demands of modern heat pump and electric heat systems. By replacing a sticking or failed sequencer with this genuine York replacement part, technicians can resolve common issues such as heating elements staying energized after the thermostat is satisfied or delayed blower activation during a call for heat.

Key Benefits for Contractors:

• System Reliability: Genuine OEM part ensures exact electrical specifications and terminal positioning for 100% compatibility.
• Staged Heating Control: Protects the building's electrical infrastructure by staggering the 1V to 3V heating element loads.
• Durable PTC Construction: High-performance thermal-actuated switch designed for longevity in high-frequency cycling environments.
• Universal HVAC Application: Optimized for use in York heat pump air handlers and electric furnace control circuits.
• Simplified Maintenance: Features standard quick-connect spade terminals for efficient diagnosis and replacement during service calls.

Common Questions & Technical Support:

How do I know if the heat sequencer relay is bad?
Common failure symptoms include heating elements not turning on, elements staying energized after the system shuts down, or the indoor blower failing to start during the heating cycle. Use a multimeter to check for continuity across the switches after the 24V coil has been energized for 1–2 minutes.

Is the S1-024-19082-703 compatible with other brands?
While designed as a York OEM replacement, this sequencer can often replace most Klixon or TOD brands with similar timing and voltage ratings. Always verify the terminal count and timings on the original part before substitution.

What is the purpose of the 1V to 3V rating?
This rating refers to the sequence timing of the switches, ensuring that the heating banks are energized and de-energized in the correct order to minimize electrical "inrush" and prevent rapid temperature swings.

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.