Lochinvar & A.O. Smith 100109879 Ignition Module 320819-301 This board replaces part numbers

This board replaces part numbers 39M8401

making it an ideal choice for air handlers

or mechanical stress from improper mounting in the burner assembly

fully compatible with modern high-pressure refrigerants and POE oils

This HVAC fan blade replacement features a standard 1/2-inch hub

Lochinvar & A.O. Smith 100109879 Ignition Module 320819-301 This board replaces part numbersThe Lochinvar & A. O. Smith 100109879 Ignition Module is a critical OEM replacement part designed for high efficiency gas fired boiler and water heater systems. As a veteran grade intermittent pilot ignition (IID) control, this 6 pin module manages the electrical sequence of the pilot light and main burner, ensuring precise timing and safe operation. It integrates a sophisticated flame sensing circuit to prevent hazardous gas accumulation by