Genuine LiftMaster K1D6686CC expansion board — the second board in the electrical box of the 2012–2015 CSL24V / CSL24VH slide and CSW24V / CSW24VH swing gate operators, the generation that runs the K1D6597-1CC main board. The expansion board carries the accessory inputs (loops, photo eyes, edges, wired controls) and plugs into the main board. Each generation of the CSL24 / CSW24 has its own pair, and they do not mix.
Match the expansion board to the main board. Read the number on the main board: K1D6597-1CC → this K1D6686CC. K1D8059-1CC (CSL24VDC / CSW24VDC) → K1D8080-1CC. K1D8389-1CC (CSL24U / CSW24U, UL325) → K1D8387-1CC.
Specifications
| Part number | K1D6686CC |
|---|---|
| LiftMaster description | Expansion Board — CSL24V / CSW24V |
| Pairs with | K1D6597-1CC main board |
| Fits | CSL24V, CSL24VH, CSW24V, CSW24VH (2012–2015) |
| Condition | Genuine LiftMaster OEM, new |
Which generation do I have?
| Main board reads | Operators | Expansion board |
|---|---|---|
| K1D6597-1CC | CSL24V, CSL24VH, CSW24V, CSW24VH | K1D6686CC — this board |
| K1D8059-1CC | CSL24VDC, CSW24VDC | K1D8080-1CC |
| K1D8389-1CC | CSL24U, CSL24UL, CSW24U, CSW24UL (UL325) | K1D8387-1CC |
Upgrading instead? The K1D8389-1CCU upgrade kit converts a 2012–2015 V / VH / VDC operator to the current UL325 boards with monitored eyes, and replaces both boards at once.
Parts often replaced with it
K1D6597-1CC main board · K76-34728 EMI board · K204C0211 transformer · K76-34697 APS encoder
Is the board actually the problem?
The logic board is the most over-ordered part on a commercial operator. Work down this list before you buy:
| Symptom | Check first |
|---|---|
| Accessories (loops, eyes, edge) ignored but the gate runs from the board buttons | This expansion board, or its ribbon connection to the main board |
| Operator dead, no board lights | Transformer, EMI board and rectifier before either board |
| Gate loses position | APS encoder, not the boards |
| Dead after a storm | Both boards can go — check the main board too, and fit surge protection |
After fitting
Re-connect every accessory to the same terminals, then re-test each one — loops, eyes and edge — and the entrapment reversal before returning the gate to service.
Fit surge protection when you fit the board. Lightning and utility surges are the most common reason a commercial operator board is replaced, and a new board on the same unprotected supply is at the same risk. The MOV kit on the electrical box is the first line; a proper surge arrester on the supply is the second.
Related
CSL24 parts · CSW24 parts · all LiftMaster gate operator parts
Not sure which board you need? Send a photo of the number printed on your existing board to parts@gatehousesupplies.com or call 866-965-5599. We would rather confirm it than have you fit the wrong board.
