Lennox 69W57 Pressure Switch 340793-762 Refrigerant Compatibility: Fully compatible with

Refrigerant Compatibility: Fully compatible with R717 (Ammonia)

How do I override the current schedule

Often caused by a failing inducer

this switch acts as a reliable air proving switch

a reading outside of the manufacturer's specified range usually indicates the element is nearing the end of its functional life

Lennox 69W57 Pressure Switch 340793-762 Refrigerant Compatibility: Fully compatible withThe Lennox 69W57 Pressure Switch is a critical OEM replacement part engineered for high efficiency, 2 stage HVAC systems. As a dual stage sensing component, it accurately monitors the differential pressure within the inducer housing to ensure the combustion process is safe before allowing ignition. This Lennox 102737 05 pressure switch features precise factory set parameters, with a high set point of 0. 68" W. C. and a low set point of 0. 30" W. C.,