Answer Hello David, The instructions on removing the control box is included in the tech sheet for the unit. The tech sheet is usually in the power connection box or in the control box. Remove the filters and remove the two screws and loosen the four thumb screws and the control box will come out. Disconnect the wires and it will be loose from the hood assembly. Read More... Answered by AppliancePartsPros.com | Friday, June 7, 2019