which is identical in specification and application to the ASD-28S4-VV and ASD28S4W models

High-capacity compatibility: Rated for large boiler configurations up to 35

and FAN3719

Industrial Durability: Features a robust dry case construction that withstands the standard wear and tear of a service truck and job site

or a "pressure switch stuck open" error code on the furnace control board

Lochinvar & A.O. Smith 100109676 Adapter 319848-301 which is identical in specificationThe Lochinvar & A. O. Smith 100109676 Adapter is a critical OEM replacement part designed for field technicians servicing high efficiency water heaters and boiler systems. This 4 pin to 5 pin adapter bridges the gap between different generations of control components, typically required when upgrading a hot surface ignitor or gas valve assembly on units like the A. O. Smith BTN 80 and BTN 100 or compatible Lochinvar Knight series. In the field, you