York S1-024-25391-700 Relay

The York S1-024-25391-700 Relay is a high-duty compressor potential relay engineered for precise startup control in residential and commercial condensing units. Rated for 332/336V operation at 60Hz, this OEM component is essential for managing the high-torque requirements of single-phase compressor motors, particularly during the critical initial startup phase. Designed as a direct replacement for Johnson Controls and York systems, including model AC036X1321A, this 332V start relay ensures the start capacitor is dropped out of the circuit at the exact moment the motor reaches optimal speed, preventing winding damage and heat buildup.

For technicians in the field, this York OEM replacement part provides the reliability needed for heavy-duty HVAC maintenance. Its robust internal switching mechanism is built to withstand repeated cycles without contact pitting, a common failure point in aftermarket alternatives. Whether you are dealing with a hard-starting compressor or a complete failure to engage in a heat pump or AC system, installing this authentic HVAC start relay restores factory-spec electrical sequencing and maximizes the longevity of the compressor unit.

• Precise Voltage Sensing: Calibrated for 332/336V operation, ensuring the start circuit is disengaged at the correct back-EMF threshold.
• OEM Compatibility: Guaranteed fit for York, Coleman, and Luxaire equipment, specifically cross-referenced with part number 024-25391-700.
• Enhanced Motor Protection: Prevents start-capacitor overheating and protects compressor windings by managing the starting torque phase efficiently.
• Durable Construction: Engineered for industrial-grade switching performance in demanding HVACR environments.

How do I troubleshoot a York start relay?
Technicians should check for continuity across the coil and inspect the contacts for sticking or pitting. A failure often manifests as a humming compressor that fails to turn over or a tripped circuit breaker during the startup sequence.

Is York 024-25391-700 compatible with my AC?
This relay is widely used across Johnson Controls manufactured platforms. Verify the model number on your cabinet or check the existing relay for the S1-024-25391-700 stamping to ensure a proper match.

When should I replace a compressor potential relay?
Replace the relay if the compressor exhibits hard-starting symptoms or if the start capacitor shows signs of leaking or swelling, as a failing relay often causes secondary component failure.

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.