- Isolate gate (unplug cross over cable and gate master)
- Check coulisse board by swapping out for new board (see picture below for location of coulisse board).
- Swap boards between working gate and faulty gate to see if the issue moves with the board.

- Check coulisse cables by using an AlphaGate ribbon cable (routed via top cnr)

- If fault is found within the wiring harness’ start by replacing the short cable from coulisse pcb to cable      tray assembly. Then the whole cable tray assembly if required.

Coulisse pcb:

Coulisse cable (in cable chain assembly:

Coulisse cable (behind the glass door):

Additional video - How to change

Recommended spare parts

- If the coulisse PCB or any coulisse cable are faulty, below spare parts can be ordered.