LiftMaster K41-0388-000MC Main Board for all Maxum Operators

The LiftMaster K41-0388-000 Main Board is the OEM replacement logic/control board used in LiftMaster MAXUM commercial door operator systems. As the central controller, it manages motor operation and connected accessories, enabling standard open/close/stop functions, integration with monitored safety devices, and advanced operator features supported by the MAXUM platform. This board is intended for select LiftMaster industrial and commercial operators that ship with the MAXUM control system; it restores normal operation when the original board has failed and maintains compatibility with LiftMaster accessories designed for MAXUM-enabled operators.

Use this genuine LiftMaster replacement part to service trolley, jackshaft, hoist, or gear-reduction operators built on the MAXUM architecture commonly found on sectional doors, rolling steel doors, and grilles in warehouses, distribution facilities, and other commercial applications. Installation should be performed by a qualified door professional with power locked out, followed by required setup such as reprogramming limits and verifying safety inputs (e.g., monitored photo eyes or edges) to meet current UL 325 requirements. Compatibility is model-specific; confirm your operator uses the MAXUM control system and cross-check the part number in the operator’s manual or LiftMaster documentation. This main board is not interchangeable with other LiftMaster logic platforms, and proper commissioning includes testing of all entrapment protection devices and accessories after replacement.