What causes a Lennox 18J28 limit switch to trip repeatedly

and 1/8 HP at 125 VAC

5 MFD capacitor ensures lower energy consumption and reliable starting torque

the STT18A-600R features precision-machined internal components that ensure a drip-tight seal and reliable modulation in water-cooled condensers

Lennox 51M75 Limit Switch 319825-402 What causes a Lennox 18J28The Lennox 51M75 Limit Switch is a critical safety component designed for precise thermal regulation within residential gas furnaces and air handlers. This OEM Lennox replacement part operates with a fixed temperature range, featuring a 95 125F trip point with an automatic reset configuration. Engineered to monitor heat exchanger temperatures, the Lennox 51M75 prevents overheating by breaking the electrical circuit to the gas valve or blower motor if