York S1-024-20870-000 Relay

The York S1-024-20870-000 is an OEM 24V SPDT Relay designed for precision switching in residential and light commercial HVAC equipment. Engineered as a direct replacement for York furnace relays, this component features a Single Pole Double Throw (SPDT) configuration, allowing for control over both normally open and normally closed circuits. It is a critical component for managing HVAC blower motor control and sequenced operation. Operating on a 24-volt AC coil, this relay ensures reliable signal processing between the thermostat and high-voltage loads. Its compact design facilitates easy installation in tight control cabinets, maintaining OEM HVAC parts standards for durability and electrical cycling. When performing 24V relay troubleshooting, verify coil resistance and contact continuity to ensure optimal performance. This genuine Source 1 part eliminates compatibility issues common with universal aftermarket alternatives, ensuring the system operates within original factory specifications for sequence and timing.

• OEM Compatibility: Exact drop-in replacement for York, Luxaire, and Coleman units ensures proper fitment and terminal alignment.
• SPDT Versatility: Directs power to multiple circuits, providing flexible control for fan speeds or auxiliary heat kits.
• Reliable Switching: Rated for high-cycle life to handle frequent thermostat calls without contact welding or mechanical failure.
• Low Power Draw: The 24V coil is optimized for standard Class 2 transformers, preventing excessive voltage drop in the control circuit.

Can this relay replace a SPST relay in a York furnace?
Yes, an SPDT relay can replace an SPST model by utilizing only the normally open (NO) or normally closed (NC) terminals as required by the wiring diagram.

What are the symptoms of a failing S1-024-20870-000 relay?
Common indicators include a humming coil, the blower motor failing to engage, or contacts sticking in the closed position, which keeps the fan running constantly.

Is this part compatible with 120V or 240V loads?
While the control coil operates at 24V, the contacts are rated to switch higher line voltages; always verify the specific amperage draw of your load against the technical datasheet.

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.