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Bard part number 8201-069 is an OEM heat pump defrost control circuit board used in select Bard wall mounted heat pump systems to manage the defrost sequence and maintain reliable heating performance in cold, frost forming conditions. This control board monitors defrost inputs and coordinates key system functions to help prevent outdoor coil icing, protect the refrigeration circuit, and keep the unit operating efficiently. Because control boards are model and revision sensitive, match 8201-069 to your unit model and wiring diagram before ordering, and transfer any required jumpers or settings exactly as shown in the Bard service literature.