Troubleshooting the ESP32-S3-BOX-3

This section provides troubleshooting steps for the ESP32-S3-BOX-3 by Espressif.

Error: Unable to connect to Wi-Fi


The ESP32-S3-BOX-3 shows a message that it is unable to connect to Wi-Fi.


  1. First, check if your network is ready in general.

    1. Make sure your router is on and within reach.
    2. Make sure you have chosen a Wi-Fi network that supports 2.4 GHz. The ESP32-S3-BOX-3 won’t show up on a 5 GHz network.
  2. The next step is to make sure you entered the correct Wi-Fi password. Follow the steps either under Option 1 or Option 2, depending on whether or not you have the ESPHome add-on installed.

    • Option 1: You do not have the ESPHome add-on installed or you have the add-on but did not adopt the ESP32-S3-BOX-3. If the device is shown in green, it is not adopted. ESP32-S3-BOX-3 not adopted
      1. Make sure the USB cable is plugged into the ESP32-S3-BOX-3.
      2. Go to the ESPHome projects website, select the Connect button, then Change Wi-Fi.
    • Option 2: You already have the ESPHome add-on installed and adopted the ESP32-S3-BOX-3 on your ESPHome dashboard.
      1. Make sure the USB cable is plugged into the ESP32-S3-BOX-3.

      2. In Home Assistant, go to Settings > Add-ons > ESPHome, and Open Web UI.

      3. On the ESP32-S3-BOX-3 add-on, select edit. ESP32-S3-BOX-3 open config file

        • Result: An editor opens, showing the configuration file. ESP32-S3-BOX-3 edit config file
      4. In the wifi section, check if it refers to the secrets file (contains !secret). If it does not contain a wifi section, enter the section below:

          ssid: !secret wifi_ssid
          password: !secret wifi_password
      5. Close the editor and in the overview, select Secrets. ESP32-S3-BOX-3 open config file

      6. Enter your Wi-Fi credentials. ESP32-S3-BOX-3 open config file

The Wi-Fi dialog never shows after the installation


The installation wizard never shows the dialog to connect to the Wi-Fi, but directly returns to the screen with Install Voice Assistant.


  1. Disconnect the USB cable connecting the ESP32-S3-BOX-3 and connect it again.
  2. If this didn’t help, check if you are using a USB cable that is power only and does not transfer data.

Error: No Home Assistant


The ESP32-S3-BOX-3 shows a message that there is no Home Assistant.


This message indicates that the device could connect to the Wi-Fi, but is unable to communicate with Home Assistant.


  1. If you see this message during a restart or while an update is running, wait until the restart or update is finished.

    • In this case, there is nothing you need to do. It is expected that the device temporarily stops communicating.
  2. Make sure your device is on the same network as Home Assistant.

    • If you have a complex network setup with VLAN, make sure it is in the same VLAN.
  3. Go to Settings > Devices & Services.

  4. If you see the screen below, but the ESP32-S3-BOX-3 is not listed, select Setup another instance of ESPHome.

    ESP32-S3-BOX-3 open config file

    • Go to your router, find the IP address or hostname of your device, and enter it.