Lennox 10U66 High Pressure Switch 670 PSI Manual Reset

The Lennox 10U66 is a manual reset high pressure switch rated for 670 PSI, designed as a critical safety component for commercial and residential HVAC systems. This pressure control device monitors refrigerant pressure in air conditioning and heat pump systems, automatically shutting down the compressor when pressure exceeds safe operating limits.

Key Features:

• 670 PSI pressure rating for reliable high-pressure protection
• Manual reset design requires technician intervention after trip, preventing automatic restart
• Direct replacement for Lennox OEM equipment
• Protects compressor and system components from dangerous over-pressure conditions
• Durable construction for long-term reliability in demanding HVAC applications

This high pressure safety switch is essential for preventing catastrophic system damage caused by refrigerant overcharge, condenser blockage, or cooling system failure. The manual reset feature ensures that a qualified technician diagnoses and corrects the underlying problem before the system returns to operation.