Lennox 83L76 Limit Switch 322838-752 With a 3-speed blower motor

With a 3-speed blower motor configuration and a 1350 RPM rating

or debris buildup in the blower wheel

Durable Construction: Features a corrosion-resistant powder-painted finish and a burst pressure rating that meets rigorous industry standards

the bulb should be secured between the 1 o'clock and 4 o'clock positions

Standard industry practice requires matching the capacitor to the motor's microfarad (MFD) rating

Lennox 83L76 Limit Switch 322838-752 With a 3-speed blower motorFor 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