Lennox 10M79 Limit Switch 322838-753 This is a complete assembly

This is a complete assembly including the molded 4-pin plug and pre-terminated insulated wire leads for direct installation

plug-and-play fit during field installation

Using a genuine 1177593 motor ensures the original engineering specifications for airflow and static pressure are met without the need for field modifications

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

Lennox 10M79 Limit Switch 322838-753 This is a complete assemblyThe 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