Lennox 36K28 Limit Switch 30067439-890 Universal Compatibility: Specifically designed as

Universal Compatibility: Specifically designed as the drop-in Erie 30-118-A replacement for AG series actuators and Classic G/L dampers

Universal Compatibility: Serves as a drop-in replacement for the KMC M574-3520 and Barber Colman 2474-230

Improved Signal Accuracy: Ensures stable flame rectification signals (µA) to prevent intermittent system lockouts and furnace short-cycling

Constructed with a lead free copper alloy body and a corrosion-resistant stainless steel spring

Technicians can adjust the setting by turning the internal adjustment screw

Lennox 36K28 Limit Switch 30067439-890 Universal Compatibility: Specifically designed asThe Lennox 36K28 is a critical safety component designed for precise thermal regulation within residential and light commercial Lennox furnace systems. This automatic limit switch is engineered to monitor heat exchanger temperatures, effectively interrupting the burner circuit if internal conditions exceed the safety threshold. Operating with a fixed range of 160 190F, it provides a vital fail safe against overheating caused by restricted airflow or