Lennox 10U65 (103884-02) is a factory-engineered high-pressure switch designed to safeguard refrigerant systems from unsafe operating conditions. Built for reliability and consistent performance, this switch activates at 640 PSI and automatically resets at 475 PSI, helping maintain proper system protection in residential and light commercial HVAC applications. It provides precise control, long-term durability, and seamless compatibility with select Lennox air conditioners and heat pumps.

This high-pressure switch is commonly used as a direct OEM replacement, ensuring proper system shutdown during high-pressure events and preventing compressor damage. A dependable choice for technicians performing system maintenance, troubleshooting, or replacing safety controls to restore unit performance.

 

Key Features:

• OEM Lennox high-pressure safety switch
• Actuates at 640 PSI; resets at 475 PSI
• Helps prevent compressor overheating and system damage
• Durable construction for long service life
• Compatible with select Lennox AC and heat pump models
• Ideal for maintenance, repairs, and restoring proper system protection