Lochinvar & A.O. Smith 100111778 PCB Assembly 319847-401 for Models F and B

for Models F and B with power venters

An open circuit typically indicates a failing inducer motor

ensuring a direct match for Amana-Goodman furnace models

which can bypass the primary drain and damage the furnace control board or flooring

Lochinvar & A.O. Smith 100111778 PCB Assembly 319847-401 for Models F and BThe Lochinvar & A. O. Smith 100111778 PCB Assembly is a direct replacement integrated control board designed for high efficiency commercial water heaters and boilers. This OEM control board serves as the primary logic processor, regulating ignition sequences, flame sensing, and temperature modulation to ensure precise thermal output. Engineered for rigorous duty cycles, the 100111778 circuit board utilizes a robust architecture to manage communication