FRITZ!Box 6820 LTE Service - Knowledge Base

FRITZ!Box 6820 LTE Service

Constant restarts: Several LEDs flash

The FRITZ!Box constantly restarts. When this happens, all or several LEDs either flash briefly several times or continuously one after another. Since the FRITZ!Box keeps restarting, you cannot access its user interface. Either particular functions or all of the FRITZ!Box functions are not working properly.

Important:If the FRITZ!Box occasionally restarts, follow the instructions in this guide.

Simply proceed as described below. After each measure, check whether the issue persists.

1 Restarting the FRITZ!Box

  1. Unplug the FRITZ!Box.
  2. Plug the FRITZ!Box back in after about 5 seconds.

    Note:The FRITZ!Box settings remain intact. The restart will take about 2 minutes. During this time, you cannot access the FRITZ!Box.

2 Using the correct power adapter

One of the most frequent causes is the use of an unsuitable power adapter for the FRITZ!Box. For example, you may be using the power adapter from a different FRITZ!Box model:

3 Resetting the FRITZ!Box