Lennox 83L76 Limit Switch 322838-752 Its automatic T&P relief functionality

Its automatic T&P relief functionality is critical for system safety

efficient performance even in space-constrained cabinets

Direct Replacement: Verified interchangeable part for 14004137-001/U

as this is a mechanical expansion valve

Lennox 83L76 Limit Switch 322838-752 Its automatic T&P relief functionalityFor service technicians addressing furnace short cycling or thermal cutout issues, the Lennox 83L76 Limit Switch serves as a direct fit OEM replacement part designed for high limit circuit protection. This 140 180F AUTO limit switch is engineered with a calibrated bimetal snap disc that opens at 180F to prevent heat exchanger damage and automatically resets at 140F once the plenum temperature stabilizes. As a critical furnace safety sensor, it