AEG battery - Status LED

The status LED on the AEG battery provides a visual indication of the current battery status and helps users diagnose the mode the battery is in. The LED changes colour depending on the status, for example based on communication with the inverter, protection mechanisms or special modes. In this way, it allows easy and quick recognition of key parameters and potential problems without the need for detailed technical access.

The LED is located in the upper right part of the front cover of the AEG batteries, both in the case of the 10 kWh version and the 15 kWh version, see photo below.

Overview of the individual battery statuses depending on the colour of the status LED:

• Red (Emergency battery start mode)
  

  • The battery is in emergency start mode. This mode allows the battery to supply power to the inverter and to establish communication with the inverter even if there is no connection to the mains or solar panels.

  • To activate this mode, do the following:

    1. Press and hold the emergency start button for 10 seconds:
    2. Once the mode is activated, the battery will provide the necessary power and communication to the inverter.

  • We recommend using this mode only in an emergency when no other power source is available. If the battery switches to this mode unscheduled, contact technical support for further assistance.
    
    

• Purple (Loss of communication between battery and inverter)
  

  • If the battery has lost communication with the inverter for more than 5 minutes, it means that the data exchange between these devices is interrupted. This condition may be caused by connection problems, malfunction or incorrect system configuration.

  • To solve this problem, do the following:

    1. Check that all cables between the battery and the inverter are properly connected and undamaged.
    2. Make sure that the inverter and battery are switched on and configured correctly.
    3. If the problem persists, restart the inverter and battery according to the instructions in the user manual.

    If communication is not restored after these steps, contact technical support for further assistance. This status is indicated by a purple status LED on the battery.
    
    

• Yellow (Battery protection mode)

  • The battery is in protection mode, which means that the third level of the protection alarm has been activated. This mode is used to protect the battery from potential damage and can be triggered for various reasons, such as:

    • Overvoltage,
    • Undervoltage,
    • Overtemperature,
    • Low temperature,
    • And other situations that could affect the safe operation of the battery.

  • To resolve this situation:

    1. Check that the battery is properly connected and operating within the recommended temperature and voltage range.
    2. Make sure that the surrounding environment does not affect the operating conditions (e.g. overheating or cold).
    3. Reboot the system according to the instructions in the manual, if the protection mode allows it.

  • If the battery remains in protection mode after these steps, contact technical support or the service team for further assistance - remote checking can in most cases reveal which of the above reasons is causing the problem (see points above).

  • This condition is indicated by a yellow status LED on the battery that changes color for easy problem recognition.
     

• White (Battery operating mode)
  

  • The battery is in working mode, which means that it is currently providing standard operation and power.

  • If multiple batteries are connected in parallel in the system, this particular battery is the master battery in operating mode.

  • Main battery in working mode:

    • It controls the synchronization and distribution of power between the other batteries in the system.
    • It ensures efficient communication and control of the entire battery system.

  • Make sure that all other batteries in the parallel connection are working properly and the system is configured correctly (the status LED will be green for the other batteries).

  • For more information about the parallel battery connections, see the section on the AEG AS-BAC1-4/HV pararel box.

  • If you experience unusual system behavior, follow the instructions in the manual or contact technical support.
    
    

• Green (Battery operating mode as slave unit)
  

  • The battery is in operating mode and functions as a slave unit in a parallel connection of multiple batteries.

  • This means that it supports the master battery in ensuring the proper operation of the entire system.

  • Subordinate battery:

    • Follows instructions and coordination from the main battery.
    • It contributes to the power supply and capacity of the system according to the needs controlled by the main battery.

  • Ensure that all batteries in the system, including this slave unit, are properly connected and operating in accordance with system requirements.A green LED on the battery indicates that the battery is in operating mode as a slave unit.

  • For more information about the parallel battery connections, see the section on the AEG AS-BAC1-4/HV pararel box.

  • In case of any problems or unusual system behavior, we recommend checking the user manual or contacting technical support.