LiftMaster K1D8284-1CC Single-Phase Gate Operator Power Board

The LiftMaster K1D8284-1CC is a single-phase gate-operator power-board service reference. Select it from the exact operator parts list and any applicable manufacturer correction before ordering. It is separate from the main logic board, transformer and motor. Similar-looking boards and a shared single-phase designation do not establish interchangeable fit. Have the technician diagnose the power and motor-control circuit and confirm the original board label so the replacement matches the actual equipment generation.

Compatibility — Models, Versions and Exclusions

Match the Correct Power Board to the Operator

The single-phase SL585UL and SL595UL drawings identify this reference, while the similarly named SL3000/CSW200 power-board application has a manufacturer correction to K1D8402-1CC. That distinction makes exact model selection essential. Do not treat the two service numbers as automatically interchangeable or use an older drawing without checking the applicable correction.

A gate that does not respond may have a supply, switch, fuse, wiring, motor or mechanical fault. Replacing a power board without checking those conditions can leave the original fault unresolved. Record diagnostic information and inspect the connected components before ordering. Preserve photographs of the wiring so the technician can restore the manufacturer’s arrangement during service.

Specifications and Product Identification

Before Ordering

• Read the complete operator model and existing board number.
• Verify the correct service reference and any manufacturer correction.
• Have supply, motor circuit and connected wiring checked.
• Identify required setup and safety testing after the board is replaced.

Package Contents and Separate Requirements

This listing identifies the power-board service item. A main logic board, transformer, motor, capacitor, enclosure or complete harness is not promised as included. Confirm the current carton and supplied revision. Parts grouped within an electrical-box drawing can be separate items; the drawing is not proof that the complete electrical assembly ships under this board number.

Safety Warnings — Read Before Installation or Service

• WARNING: AC gate electronics contain hazardous voltage and can cause unexpected movement. Replacement requires a qualified gate-systems technician.
• Disconnect and secure every applicable power source before touching wiring or removing the board.
• Do not fit a three-phase board or another model’s board based only on connector appearance. Never bypass protection to make an unmatched part run.
• Restore the specified wiring, covers and settings, then test travel, reversal and all required safety devices before normal use.

Related Products and Important Differences

• LMRRUL monitored photo eye — a separate protection option only where the exact operator and control revision approve it; not a universal legacy retrofit.
• LMWEKITU monitored wireless edge kit — a separate monitored-edge communication system with its own compatibility requirements; it does not replace this service part.

Frequently Asked Questions

Is this the same board as K1D8402-1CC?

No universal interchangeability is established. LiftMaster specifically corrects the SL3000UL power-board reference to K1D8402-1CC.

Can it be used on the three-phase version of the same operator?

Do not assume so. The manufacturer diagrams identify a separate three-phase board reference.

Will this fix every no-movement fault?

No. The supply, control signals, motor, wiring and mechanical drive require diagnosis.

Is the entire electrical enclosure included?

No complete enclosure is promised. Confirm the actual board kit contents and any separately required parts.

Need Help Confirming the Right Product?

Contact Garage-DoorParts.com before ordering. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.