The Hörmann D437634 Electronic Board SD7500 is a genuine OEM replacement control PCB designed for select Hörmann operator systems built on the SD7500 control platform. As the central control module, it manages the drive logic, safety inputs, and accessories for compatible door and gate operators, restoring reliable operation when the original board is faulty. This board is intended for use with Hörmann equipment that explicitly references “SD7500” on the operator or control housing; always verify part number D437634 and SD7500 designation on your existing unit or the manufacturer’s documentation to ensure compatibility.
Installation should be performed by a qualified technician. Disconnect mains power before servicing, transfer wiring like-for-like from the original board, and follow Hörmann setup procedures for commissioning. After replacement, operators may require programming of travel limits, force/obstacle detection, and the re-learning of radio controls or accessories according to the applicable Hörmann service manual for the SD7500 platform. Use only with approved Hörmann components and safety devices, and observe all local electrical and door operator safety standards. This original Hörmann control board is suitable for maintenance and repair in residential or commercial applications where an SD7500-based controller is specified.