Most failures are due to carbon buildup (soot) clogging the orifice end or physical damage/kinking during previous maintenance

matching components for multi-circuit systems or inventory replenishment

maintaining the integrity of the HVAC temperature control loop without the risk of nuisance tripping or safety bypasses

Facilitates accurate HVACR troubleshooting by acting as a definitive safety cutoff during electrical faults

York S1-024-35664-000 Relay Most failures are due toThe York S1 024 35664 000 Relay is a heavy duty 30A HVAC switching relay engineered for reliable performance in residential and commercial climate systems. Formally designated as a 24VDC power relay, this factory approved OEM York replacement part is critical for managing high current induction loads, such as blower motors and compressors, in response to low voltage signals from the control board. Also identified by industry cross references AZ2280 1A