Dorman 904-614 HVAC Pressure Switch

Reliable HVAC Pressure Switch for Volvo Models

The Dorman 904-614 HVAC Pressure Switch is engineered specifically for select Volvo vehicles, including the C30, S40, S60, S60 Cross Country, V40, V50, V60, XC60, and XC70. Designed to monitor refrigerant pressure accurately, this switch ensures your vehicle's air conditioning system operates within safe parameters.

• Voltage: 5V operation for precise control
• Compatible refrigerant type: R134a
• Pressure limits: Closes at 260 psi, opens at 475 psi
• Maximum pressure reading up to 522 psi
• Durable metal housing with bolt mount type
• Black rectangular female connector with 3 male blade terminals
• Specific fit for Volvo HVAC systems
• Thread diameter: 10 mm for secure installation

Detailed Product Description

The Dorman 904-614 HVAC Pressure Switch is a critical component in the air conditioning system of various Volvo models. It monitors the refrigerant pressure of R134a and activates or deactivates the compressor clutch based on pressure thresholds. The switch closes at 260 psi and opens at 475 psi, protecting the system from pressure extremes. Its robust metal housing and bolt mount design provide durability and secure attachment within the HVAC assembly. The black rectangular connector with three male blade terminals ensures reliable electrical connections, while the 5-volt rating supports consistent sensor performance.

Common Applications and Issues Addressed

• Prevents compressor damage due to abnormal refrigerant pressure
• Helps maintain optimal air conditioning system performance
• Resolves intermittent A/C compressor engagement problems
• Addresses HVAC system pressure sensor faults in Volvo C30, S40, S60, and related models
• Eliminates pressure-related A/C system shutdowns or failures

Installation Notes and Tips

• Ensure vehicle compatibility with Volvo C30, S40, S60, S60 Cross Country, V40, V50, V60, XC60, or XC70 before installation
• Use appropriate tools to remove the old pressure switch and install the new one with the 10 mm thread diameter
• Verify electrical connections match the black rectangular female connector with three male blade terminals
• Check for refrigerant leaks and proper system pressure after installation
• Follow manufacturer torque specifications for bolt mounting

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 904-614 HVAC Pressure Switch undergoes rigorous quality control to ensure reliable operation in Volvo HVAC systems. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship to provide confidence in your replacement part.