York S1-S90-360 Relay

The York S1-S90-360 Relay is a heavy-duty, 24V SPST-N/O fan relay designed for precise induction motor control and pilot duty applications in HVACR systems. Engineered as a genuine OEM replacement part, this relay features normally open contacts that close upon energizing the 24VAC coil, making it a staple for York furnace repair and air handler maintenance. With a durable construction capable of handling switching capacities up to 6 amps, it provides a reliable interface between low-voltage thermostats and high-voltage blower motors. This switching relay is built with high-quality silver cadmium oxide contacts to resist arcing and pitting, ensuring consistent conductivity across thousands of cycles. For field technicians, the compact footprint allows for seamless integration into existing control panels, while the standard terminal layout simplifies relay wiring and troubleshooting during critical service calls.

• OEM Compatibility: Specifically engineered as a direct drop-in for York, Coleman, and Luxaire equipment, eliminating the need for mounting modifications.
• Robust Switching: The single-pole single-throw (SPST-NO) design is optimized for high-cycle fan systems and pilot duty circuits.
• Efficient Coil Performance: The 24V coil draws minimal amperage, reducing the load on the HVAC transformer.
• Industrial Duty: Constructed to withstand the temperature fluctuations and vibration typical of air handler and furnace environments.

How do I test if the York S1-S90-360 is faulty?
Use a multimeter to check for 24VAC at the coil terminals. If voltage is present but the normally open contacts fail to close (continuity check), or if the coil shows infinite resistance (open circuit), the relay should be replaced.

Can this relay be used to switch voltages higher than 24V?
Yes, while the coil is 24V, the SPST-NO contacts are rated to switch higher line voltages, typically up to 240VAC or 277VAC, depending on the specific inductive load and amperage requirements.

What are the signs of a failing fan relay?
Technicians should look for audible "chattering," oxidized or "stuck" contacts that keep the blower running constantly, or a failure of the indoor fan to engage during a call for cooling or heat.

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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.