First Company CB103B Circuit Board Els PW 29614 Built with a 5/8" ODF

Built with a 5/8" ODF sweat connection

and heavy silicon or carbon buildup which insulates the rod from the ions in the flame

This part is frequently used to resolve intermittent furnace ignition and "no flame sensed" errors

Constructed with a high-grade standard ceramic insulator

providing a direct-fit solution for furnace pressure switch replacement

First Company CB103B Circuit Board Els PW 29614 Built with a 5/8" ODFThe First Company CB103B Circuit Board (Model 1102 1A) is a critical OEM replacement control board designed for high performance management of HVAC air handler operations. As a direct fit replacement for the original 1102 1A and CB103B series, this board regulates essential system sequences, including fan motor control, heating relay activation, and cooling cycle timing. Engineered for First Co fan coil units and multi family residential air handlers,