York S1-025-50188-000 Pressure Switch

The York S1-025-50188-000 is an OEM high pressure switch engineered for critical system protection in residential and commercial HVAC equipment. Traditionally found in R-410A systems, this normally closed switch monitors head pressure to prevent compressor damage and mechanical failure. It features a factory-calibrated 650 PSI cut-out threshold, which opens the electrical circuit when internal pressures exceed safe limits, and a 450 PSI cut-in reset point to resume operation once the system stabilizes.

Designed for field reliability, this HVAC pressure control utilizes a compact, screw-terminal interface for secure electrical termination. Its robust housing is built to withstand high-vibration environments common in condenser sections. This York replacement part ensures your system operates within prescribed safety parameters, maintaining the integrity of the refrigeration cycle. Whether you are addressing a lockout issue or performing a preventive overhaul, using a genuine head pressure safety switch is essential for precise setpoint accuracy and long-term diagnostic stability.

• Precise Pressure Calibration: Factory set at 650/450 PSI to ensure accurate cut-out and cut-in response without manual adjustment.
• OEM Compatibility: A direct manufacturer replacement for York, Coleman, and Luxaire units, ensuring seamless integration with existing wiring harnesses.
• Heavy-Duty Electrical Rating: Features 15-amp capacity to handle high-current inductive loads efficiently.
• System Lifecycle Protection: Prevents catastrophic compressor failure by interrupting power during extreme over-pressure events.

Is the S1-025-50188-000 a manual or auto-reset switch?
This is an automatic reset pressure switch. It will automatically close the circuit once the system pressure drops back down to the 450 PSI cut-in setpoint.

Can I use this switch for both R-22 and R-410A systems?
While the physical fitting may match, this switch is specifically calibrated for the higher operating pressures of R-410A refrigerant. Always verify your specific system setpoint requirements before installation.

What causes this high-pressure switch to trip frequently?
Frequent tripping is usually indicative of poor airflow across the condenser coil, a failing outdoor fan motor, or a refrigerant overcharge. Check for dirty coils or obstructions before replacing the control.

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.