Lennox 66J78 Limit Switch Els PW 17895 Precise 3/16" I

Precise 3/16" I

For ducts wider than 4 feet

What causes a limit switch like the 626612 to fail frequently

OEM Compatibility: Specifically designed for direct replacement in York

Lennox 66J78 Limit Switch Els PW 17895 Precise 3/16" IExperienced HVAC contractors recognize the Lennox 66J78 Limit Switch as a critical safety component for maintaining furnace integrity and preventing heat exchanger damage. This OEM Lennox replacement part is a 36T series disc style control designed for High Limit or Secondary Rollout applications. It features a Normally Closed (NC) circuit that opens on temperature rise to interrupt the heating cycle if internal temperatures exceed safe operating