York 025-43553-000 Flow Sensor

The York 025-43553-000 Flow Sensor is a critical thermal dispersion flow switch utilized across a range of York chillers, including YLAA, YVAA, YVFA, YCAV, and YCIV series. Engineered for high-precision monitoring of fluid movement, this sensor functions as an OEM replacement for 025-38145-001 and the SC0517 model. It utilizes a calorimetric operating principle, detecting thermal energy displacement via dual thermistors to ensure accurate refrigerant flow detection or water circulation monitoring. This 24V AC powered unit features a standard 1/4 inch NPT connection for seamless integration into existing chiller piping. Built with a durable stainless steel body, it is designed to withstand harsh industrial environments while maintaining tight tolerance for chiller safety controls. For a full installation, the 024-38119-000 cable is typically required and ordered separately. Techs should note that proper orientation at the 3 o’clock or 9 o’clock position is necessary to keep the probe tip submerged at least 12mm for reliable signal feedback to the control panel.

• Direct Compatibility: Engineered as the direct York 025-38145-001 replacement, ensuring drop-in mechanical and electrical fit without field modifications.
• Advanced Sensing: Employs thermal dispersion technology for high-sensitivity flow rate detection, protecting the compressor from low-flow conditions.
• Industrial Build: Features a robust 316 stainless steel housing for superior corrosion resistance in chilled water and glycol applications.
• Standardized Threading: The 1/4 NPT flow sensor interface allows for straightforward threading into thermal wells or direct pipe taps.

Common Questions Does this sensor include the electrical connection cable? The 025-43553-000 is the sensor body only. If you are performing a new installation or the existing lead is damaged, you must source the 024-38119-000 cable separately to complete the circuit. How do I prevent the "Flow Switch Open" error after installation? Ensure the sensor is mounted horizontally in the 3 or 9 o'clock position. If the probe is not fully submerged at least 12mm into the fluid stream, it will trigger nuisance trips or fail to detect flow within the 30-second startup window. Can I clean the probe if I notice scaling? Yes. Use a soft cloth and vinegar to remove mineral deposits. Avoid using abrasive materials or wire brushes, as scratching the probe surface will degrade the accuracy of the thermistors and lead to sensor 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.