Four Seasons 20890 HVAC Cut-Off Switch

Reliable Pressure Switch for Jaguar XJS HVAC Systems

The Four Seasons Pressure Switch 20890 is designed specifically for the Jaguar XJS, providing precise low cut-out functionality in your vehicle's HVAC system. This system-mounted switch ensures proper pressure regulation to maintain optimal climate control performance.

• Compatible with Jaguar XJS models
• Low cut-out pressure switch type for HVAC systems
• Durable plastic and metal construction in black finish
• 1/8 inch pipe male fitting with 13/32 x 27 thread size
• Two-terminal connector with open connector shape
• Meets or exceeds OEM specifications
• System-mounted design for easy installation

About the Four Seasons Pressure Switch Product Line

The Four Seasons Pressure Switch line offers reliable HVAC cut-off switches engineered to maintain system pressure integrity. The 20890 model is part of this line, featuring a pressure-sensitive low cut-out style switch that helps protect your Jaguar XJS’s HVAC system by monitoring and controlling pressure levels accurately. This product line focuses on durability and OEM compatibility to ensure consistent performance.

Product Details and Specifications

This HVAC cut-off switch features a black plastic and metal body designed for system mounting within the Jaguar XJS HVAC assembly. It includes a male fitting with a 1/8 inch pipe thread (13/32 x 27) for secure connection. The switch operates in an open comp open/closed state and has an open connector shape with two terminals, facilitating straightforward electrical integration. Its low cut-out pressure style helps regulate system pressure by interrupting operation when pressure falls below a set threshold.

Common Applications and Issues Addressed

• Prevents HVAC system damage due to low refrigerant pressure
• Helps maintain consistent cabin temperature control
• Protects compressor by cutting off operation under unsafe pressure
• Ensures proper system cycling and efficiency
• Reduces risk of HVAC component failure in Jaguar XJS vehicles

Installation Notes and Tips

When installing the Four Seasons Pressure Switch 20890, ensure the system is depressurized and the vehicle is off. The male fitting requires a secure 1/8 inch pipe thread connection to the system mount location. Verify the two-terminal connector is properly aligned with the open connector shape for correct electrical contact. Follow Jaguar XJS HVAC service guidelines for pressure switch replacement to avoid leaks or improper function.

Quality Assurance and Warranty

The Four Seasons Pressure Switch 20890 meets or exceeds OEM standards for fit, form, and function, ensuring reliable operation in Jaguar XJS HVAC systems. Manufactured with durable plastic and metal materials, this switch is built to withstand typical automotive conditions. Warranty coverage details should be confirmed with the product documentation or supplier.