Lennox 10U40 High Pressure Switch 675PSI-490PSI

The Lennox 10U40 High-Pressure Switch is an essential safeguard that is used in Lennox HVAC equipment. This compact switch with 12 inches lead for convenience in installation, controls the refrigerant pressure of your system. Originally intended for 120V and 240V systems compatibility, it serves an essentialfunction to avoid possible harm. The switch operates at 640 PSI, and when pressure goes higher than this limit, it stops the power supply to the compressor. This can be as a result of limited air flow, low refrigerant charge, or a bad compressor. As soon as the pressure goes back to normal the switch flips back on and the compressor can begin again.