Lennox 10M79 Limit Switch 322838-753 a drop of 15 psi

a drop of 15 psi or a leaving pressure below 50 psig typically indicates the element is saturated and requires immediate replacement

proceed with the next larger orifice size to ensure proper flow

By integrating full-time flame monitoring and specialized safety timings

plug-and-play fit during field installation

this main harness eliminates the high-resistance issues often found in aftermarket "universal" kits

Lennox 10M79 Limit Switch 322838-753 a drop of 15 psiThe Lennox 10M79 Limit Switch is a critical safety component engineered for precision thermal monitoring in HVAC systems and residential furnaces. This OEM Lennox part, also identified by manufacturer number 10M7901, features an L140 40F configuration. It is calibrated to open the electrical circuit when internal temperatures reach a 140F limit, effectively preventing heat exchanger damage and ensuring safe appliance operation. The switch