Lochinvar & A.O. Smith 100167824 Control Board 30067439-890 such as the VA-7000 or

such as the VA-7000 or VA-4233 series

Using it on an NC body will lead to improper seating and mechanical failure of the plunger

Enhanced Durability: Constructed with high-grade materials for extended operational life and consistent ignition

A failing capacitor is a primary cause of motor humming or failure to kick over under load

Key Benefits for Technicians: Precision Flame Alignment: The 90-degree left-hand porting provides focused heat transfer to the sensing element for faster valve response

Lochinvar & A.O. Smith 100167824 Control Board 30067439-890 such as the VA-7000 orThe Lochinvar & A. O. Smith 100167824 Control Board is a critical integrated component designed for high efficiency Knight XL heating boilers, specifically the KBN501 series. As a direct replacement for the obsolete RLY30066, this OEM control board manages essential system parameters including hot surface ignition, flame sensing, and temperature regulation. It ensures precise HVAC system timing and safety protocols by monitoring the air pressure