For contractors upgrading older systems

Direct OEM Match: Provides an exact drop-in replacement for the discontinued R47469-001 model

Use a multimeter to perform an ohm check at the back of the controller pins

Featuring a 3/8-inch NPT connection and a robust brass body

Bypassing this feature would compromise the integrity of the safety interlock system and violate most mechanical codes

First Company CB103B Circuit Board Refrigerant For contractors upgrading older systemsThe 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,