What to do if Furuno Security System shows 'Failure: Communication' and buzzer sounds?
- CColton WhitneyAug 15, 2025
If the message "Failure: Communication (or Malfunction)" appears and the buzzer sounds on your Furuno Security System, it indicates a communication error between the Main Alarm Panel and the Processor Unit. Press any key to silence the buzzer. Reset the power using the power switch on the ship’s switchboard. If the problem persists, request service.








