The light indicators of your Beoplay A9 4th Gen can be understood as follows:
| White flashing | Starting up | |
| White solid | Connected to network, ready for use | |
| Orange flashing | Ready for network setup / reconnecting to network | |
| Orange solid | Connected to the network. The wireless signal strength is medium to low | |
| Blue solid | Not connected to a network | |
| Bluetooth mode | ||
| Blue solid | The indicator turns solid blue shortly after Bluetooth pairing is successful or during music playback through Bluetooth. | |
| Red solid (shortly) | Connecting to network | |
| Off | Product is in standby mode or switched off | |
| White flashing | Product is booting up | |
| White solid | Connected to network, ready for use | |
| Red solid | Both indicators turn solid red shortly before during factory reset | |
| Red flashing | Both indicators flash red at the same time during a software update. Do not operate the product or switch it off | |
| Red flashing | Firmware error. Disconnect the product from the mains supply and reconnect it | |
| Orange flashing | The product is overheating and needs time to cool down |
