Check that the LED for "SALOON GATE" have a steady green light on both gates. 

If it doesn't work, try below:

1: Make sure that the GateCOM cable have been connected to SALOON GATE and GND.
2: Disconnect the current GateCOM cable. 
3: Connect a new GateCOM cable (make a quick test, don't do the routing). Make sure if it works or not      with a new cable.
4: If it worked with a new cable, change it. If it didn't work, change the main PCB. Change one main 
   PCB and then check if it works. If it doesn't work, change the other main PCB. 

Additional video


Recommended spare parts

- If the Main PCB and/or the Gatecom cable itself are faulty, below spare parts can be ordered.