the 100165931 prevents unburned gas accumulation and nuisance shutdowns

or excessive vibration during the start-up cycle

Universal Application: Streamlines inventory for contractors by serving as a versatile solution for multiple furnace brands and industrial heating setups

intermittent "no heat" errors

these are functionally identical parts and can be used interchangeably in all supported Lennox equipment

Fenwal 01-017023-000 Thermoswitch 30067439-890 the 100165931 prevents unburned gasThe Fenwal 01 017023 000 Thermoswitch is a high precision cartridge type temperature control engineered for demanding industrial HVACR applications. Operating on the differential expansion principle, this strut and tube thermostat utilizes a 300 series stainless steel shell as the active sensing element, ensuring a nearly instantaneous response to thermal shifts. Designed for a broad temperature control range of 100F to 600F, this unit is configured