Lochinvar & A.O. Smith 100111778 PCB Assembly 319847-401 ensuring a direct match for

ensuring a direct match for Amana-Goodman furnace models

What causes a liquid line solenoid to chatter

An open circuit typically indicates a failing inducer motor

Durable Analog Construction: Built to withstand the humidity and vibration common in mechanical rooms and near pump manifolds

pressure-tight seal that simplifies probe installation in tight spaces while maintaining standard conductive level control integrity

Lochinvar & A.O. Smith 100111778 PCB Assembly 319847-401 ensuring a direct match forThe 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