Lennox 71W43 Limit Switch 323055-751 This auto-reset limit switch ensures

This auto-reset limit switch ensures the blower continues to dissipate residual heat

utilizing Alkylbenzene (160ABM) oil with a factory charge of 1

stable signal back to the tankless water heater control board

reducing system shock and improving thermal efficiency

Lennox 71W43 Limit Switch 323055-751 This auto-reset limit switch ensuresThe Lennox 71W43 Limit Switch is a critical safety component designed for precise thermal regulation within residential and commercial furnace assemblies. This OEM Lennox replacement part, also identified as the L140 30F limit control, is engineered to monitor heat exchanger temperatures and interrupt the electrical circuit if internal heat exceeds safe parameters. With a fixed 140F opening temperature and a 110F automatic reset, this switch ensures