Furnace Control Board Replaces Carrier Bryant Payne HK42FZ039 HK42FZ047. This is a new Furnace Control Board. It replaces the part numbers listed below. The control board is the brain of your unit, coordinating and executing the operation of other various components by sending voltage when and where needed. A control board is constantly monitoring sensors and safety switches in the unit. Replaces Old Part #s. Partial List of Units that Use This Item. Hit Ctrl + F and enter your model number for a quick search!