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 flash continuously. The FRITZ!Box user interface cannot be opened and all or individual FRITZ!Box functions do not work properly.

Important:If the FRITZ!Box occasionally restarts, proceed as described in this guide.

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

1 Restarting the FRITZ!Box

  • Unplug the FRITZ!Box for 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 common causes of error is the use of an unsuitable power adapter for the FRITZ!Box:

3 Resetting the FRITZ!Box

If the problem still occurs, the FRITZ!Box is in an error state: