LiftMaster K1D8388-1CCMC Main Control Board for Compatible Linear Gate Actuators

The LiftMaster K1D8388-1CCMC is a replacement main control board for compatible LiftMaster linear-actuator gate systems. LiftMaster also identifies it as K1D8388-1CC. Select this board when the equipment parts diagram or approved service documentation calls for that reference. The K1D8388-1CC reference appears in the standard control-box parts lists for LA400UL and LA500UL systems. This listing is for the main-board service component, so confirm the installed control-box generation, existing board reference and required setup rather than selecting from the actuator name alone.

Compatibility — Models, Versions and Exclusions

Choose the Board by the Control System, Not Just the Arm

A replacement actuator and an older control enclosure can be present in the same installation. The arm label identifies the moving assembly, while the control-box and board labels identify the electronics that must be serviced. Check both before ordering. A familiar LA400 or LA500 name is not enough to establish the correct control-board generation.

This purchase addresses the main board. It does not replace a damaged actuator, provide a new enclosure or add a complete solar power system. Have the technician check whether the fault originates in the supply, wiring or a connected device before replacing electronics. Retained safety devices must be approved for the final control configuration.

Product Identification

Documented Applications

The LA400UL and LA500UL installation manuals identify K1D8388-1CC in their standard control-box parts lists. Confirm the complete system model and board revision, especially where a control box or actuator has previously been replaced.

An actuator arm, control box and board can carry different identifiers. Use the label on the installed control system as well as the arm model when checking a replacement. Do not assume the board is compatible with every older LA-series installation.

Main Board Versus Other Components

This is a main control-board service part. It is distinct from an optional expansion board, the actuator motor and the complete control-box assembly. The K1D8389-1CCMC pad-mount board is a different part and should not be substituted on the basis of appearance.

Frequently Asked Questions

Is K1D8388-1CC the same reference as K1D8388-1CCMC?

LiftMaster lists K1D8388-1CC as an alternate reference on its K1D8388-1CCMC product page. The complete operator application still needs to match.

Will replacing the board repair a failed actuator arm?

A board replacement addresses a diagnosed board fault. The actuator, wiring, power supply and gate mechanics require their own checks.

Safety Warnings — Read Before Installation or Service

• WARNING: A powered swing gate can crush or trap a person. Board replacement and setup must be performed by a trained gate-systems technician.
• Isolate AC, battery and solar supplies as fitted, and secure the gate against unexpected movement before disconnecting controls.
• Never reuse an unverified wiring arrangement simply because the terminals look similar. Follow the service instructions for the replacement board and operator revision.
• Keep people clear during travel programming. Test every required monitored sensor and the obstruction response before allowing automatic use.

Related Products and Important Differences

• K001A6039 legacy LA400 control board — compare the older control reference before ordering; shared LA400 naming does not prove interchangeability.
• LMWEKITU wireless edge kit — provides a monitored edge connection on approved systems; check the operator’s accessory list and required edge sensors separately.

More Questions Before Ordering

Does this include the entire control box?

The listing identifies the main control-board service part. A replacement enclosure, transformer, batteries and other control-box components are separate ordering decisions.

Can this board make an old gate installation safe by itself?

No. The complete gate, controls and protection devices must be assessed together. A board change is not a substitute for correcting an unsafe mechanical layout or missing entrapment protection.

Need Help Confirming the Right Part?

Contact Garage-DoorParts.com before ordering. Send the full operator model, readable part labels and photographs of the installed assembly. Include dimensions or the control-box model where relevant. We can help compare the listing with the information you provide; final installation suitability should be confirmed by the servicing technician.