Lennox 46K73 Limit Switch 318423-701 Verify the auxiliary switch wiring

Verify the auxiliary switch wiring at terminals 2 and 3

including popular LCA and LGA series units

Using a 230V motor in place of a 265V rated motor will lead to immediate overheating and winding failure

Rugged Field Reliability: Built in a durable almond housing with 32

critical for system head pressure regulation

Lennox 46K73 Limit Switch 318423-701 Verify the auxiliary switch wiringThe Lennox 46K73 Limit Switch is a critical safety component designed for precise thermal regulation within high performance HVAC systems. Engineered as a 200 230F Auto Limit Switch, this genuine OEM part monitors internal temperatures and interrupts the heating circuit if values exceed safe operating parameters, effectively preventing equipment damage. This specific model, also identified by part number 46K7301, features an auto reset function that