First Company CB103B Circuit Board Freon 0131M00003S

0131M00003S

Always match the rotation to your fan motor data plate

Using a switch with an incorrect temperature range can lead to safety hazards or frequent nuisance tripping

and neon gases

First Company CB103B Circuit Board Freon 0131M00003SThe 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,