York S1-025-35388-002 Reversing Valve

Testing and replacing a failed York S1-025-35388-002 Reversing Valve is a standard yet critical task for maintaining heat pump efficiency. This OEM York reversing valve is a 4-way pilot-operated component designed to switch refrigerant flow between heating and cooling modes in R-410A and R-22 systems. It comes equipped with a 24V solenoid coil (50/60Hz), eliminating the need to source a separate actuator. When you encounter a heat pump stuck in one mode or hear a continuous hissing from the outdoor unit, this 4-way reversing valve is often the culprit. Built with a corrosion-resistant metal body, this heat pump reversing valve replacement ensures reliable shifting under high-pressure conditions found in York, Coleman, and Luxaire split systems. For contractors, using a genuine York HVAC part prevents the common pilot tube blockages and internal bypass leaks associated with generic alternatives, maintaining the essential pressure differential required for the slide mechanism to operate correctly across all seasons.

• Factory-Matched Performance: Engineered specifically for York, Coleman, and Luxaire heat pumps to ensure exact port alignment and braze-ready connections.
• Integrated 24V Solenoid: Includes the S1-025-35388-002 coil for immediate installation, ensuring the magnetic field is strong enough to trigger the pilot valve.
• Higher Differential Pressure Tolerance: Designed to shift reliably even in extreme ambient temperatures where refrigerant pressures vary significantly.
• Durable Construction: Metal-to-metal internal seals and a corrosion-resistant bronze finish provide longevity against moisture and chemical exposure.

• How do I confirm the coil is receiving power? Use a multimeter to check for 24V at the solenoid leads when the thermostat calls for a mode change (usually 'O' or 'B' terminal).
• What causes the valve to get stuck in one mode? Common issues include a burnt-out solenoid, low refrigerant charge affecting the pressure differential, or internal physical debris blocking the slide.
• Can I replace just the coil if the valve body is fine? Yes, if the valve shifts manually or with a magnet but fails electrically, replacing only the 24V coil is a viable repair path.

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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.