ALL OUR ITEMS ARE TESTED. The Carrier Bryant LH33EP001 Control Circuit Board 1213-100 is a furnace control board designed for use with Carrier, Payne, and Bryant furnaces. This specific model, LH33EP001, is a replacement part that helps regulate and control the functions of the furnace, ensuring optimal performance and energy efficiency. As a crucial component in the HVAC and refrigeration industry, this control circuit board is an essential accessory for maintaining and repairing heating systems.