York S1-025-29139-002 Pressure Transducer

The York S1-025-29139-002 Pressure Transducer is a critical OEM replacement part engineered for precise refrigerant monitoring in York unitary systems. This high-accuracy refrigerant pressure sensor features a standard 1/4" SAE flare nut connection and is rated for a 0-200 PSI range, making it ideal for monitoring suction line conditions or low-side system pressures. As a veteran-grade HVAC transducer, it operates on a 5V DC supply voltage, delivering a linear analog output signal (typically 0.5 to 4.5 VDC) to the York control board for real-time diagnostic processing. Replacing legacy part numbers like 025-29139-002, 025-29583-000, and P499RFAT502, this genuine York PressTrans 200# ensures seamless communication between the refrigeration circuit and the system's microprocessor. The robust, factory-calibrated design prevents common sensor drift issues, maintaining the tight tolerances required for high-efficiency operation in residential and commercial split systems or packaged units.

• Precise 0-200 PSI Range: Specifically calibrated for suctions or unitary applications requiring high-resolution feedback.
• Direct OEM Compatibility: Engineered for York, Luxaire, Coleman, and Johnson Controls equipment to ensure proper fit and voltage scaling.
• Analog Signal Integrity: Converts pressure to a 0.5-4.5 VDC output for accurate control board readings and fault code prevention.
• Standard 1/4" Connection: Features a 1/4 inch threaded interface for quick installation on standard Schrader access ports.

What are the symptoms of a failing pressure transducer?
Technicians often see "Open Transducer" or "Out of Range" fault codes on the control board. If your manifold gauges show a stable 60 PSI but the board reads 0 PSI or 200 PSI, the transducer has likely failed or lost its 5V DC reference signal.

How do I test the S1-025-29139-002 in the field?
Verify the input voltage (Red to Black) is approximately 5V DC. Then, measure the signal wire (typically Green or White) to Ground. Use a standard voltage-to-pressure chart to confirm the VDC output directly corresponds to the actual system pressure measured with your gauges.

Can I use this for high-side discharge pressure?
No, this specific model is rated for 200# PSI. For high-side/discharge monitoring on R-410A systems, you must use a transducer rated for 500 PSI or higher (such as the S1-025-29139-001) to avoid rupturing the internal sensing element.

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.