Lochinvar & A.O. Smith 100233624 Gasket 321894-709 If your furnace diagnostic LED

If your furnace diagnostic LED indicates a pressure switch stuck open or closed

Technicians should inspect existing flue gaskets and seals

it ensures that the gas valve remains energized only when a steady flame is established

Smith 100027861 Gas Valve is a critical combustion control component engineered for precise fuel regulation in high-efficiency heating systems

Lochinvar & A.O. Smith 100233624 Gasket 321894-709 If your furnace diagnostic LEDThe Lochinvar & A. O. Smith 100233624 Gasket is a critical OEM component designed specifically for the small gas air arm assemblies in high efficiency commercial and residential boilers. Engineered to withstand the rigorous thermal cycling of modern combustion systems, this cover gasket ensures a high integrity seal between the air arm and the housing. By preventing gas leaks and maintaining precise air fuel ratios, it is vital for achieving optimal