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Built to withstand extreme vibration and pressure fluctuations
An open circuit (infinite resistance) indicates a tripped or failed switch
Safety Redundancy: Prevents heat exchanger fatigue by cutting power during restricted airflow or over-fire conditions
ensuring safe indoor air quality and optimal burner performance
York S1-024-21218-700 Relay Built to withstand extreme vibrationThe York S1 024 21218 700 Relay is a heavy duty 24V SPST Relay designed for reliable low voltage control switching across York, Coleman, and Luxaire HVAC platforms. Engineered for precision performance, this Single Pole Single Throw relay functions as a critical HVAC control relay, managing high power components like blower motors, compressors, and heat pump reversing valve assemblies. For technicians troubleshooting intermittent signal loss or coil