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Help topics

In the frequently asked questions you will quickly find answers and further links to commissioning and trouble shootings, as well as general information.

IKEA TRÅDFRI lights cannot be paired.

To be able to pair an IKEA TRÅDFRI light, it must be set to factory settings. The following steps and the timing of the reset sequence must be strictly followed.

  1. Start search for lights in the Phoscon App
  2. Switch light off/on 6 times quickly (reset sequence)
  3. The light flickers briefly, then switch it off/on once again
  4. The light should now be paired within 1 minute by the Phoscon App

In this Youtube video the execution of the reset sequence is shown.

How to reset a Philips Hue light to factory settings?

The simplest method is to reset it using the Philips Hue Dimmer Switch remote control.

  1. Start search for lights in the Phoscon App
  2. Turn the Philips Hue light off/on once
  3. Hold the remote control close to the light and press and hold the I and O buttons for about 10 seconds until the light illuminates.
  4. The light should now be paired within 1 minute by the Phoscon App

Alternative: If the light is still paired to the Philips Hue Bridge, it can also be deleted in the Philips Hue App. Afterwards the light resets to factory settings and can be paired by the Phoscon app.

How does a FLS behave when switched off and on again?

If an RGB/W LED-Stripe is connected, the last set color will be restored. If the brightness was less than 80 %, it will be set to 80 %.

Otherwise the last set value is restored again. The last setting must have existed at least 20 seconds before switching off in order to be recalled.

What is the difference between ConBee and ConBee II?

Both devices offer the same Zigbee functionality. The ConBee II has a smaller housing.

ConBee and ConBee II are actively maintained and supported by deCONZ control software.

What is the range of ConBee, ConBee II and RaspBee?

The range in buildings is up to 30 m and in free field of sight up to 200 m. Due the power amplifier it is possible to bridge 2-3 rooms or floors depending on the building conditions.

Devices further away are connected through the Zigbee mesh network. In this network, all permanently powered Zigbee devices, such as lights and sockets, act as repeaters and can relay the signal.

The average range of IKEA, OSRAM and Philips Zigbee devices is approximately 5-7 m. With appropriate distribution, the mesh network can be spread over entire floors or the building.

Troubleshooting for ConBee II with Linux

The following steps guide you to check and fix problems of a deCONZ installation and the ConBee II. We recommend to follow the steps one after the other.

  1. Check USB connection and mitigate USB 3.0 problems.

    Drawing: ConBee II USB extension cable

    The ConBee II should preferably be connected to a USB 2.0 socket with an USB extension cable. Connection problems may occur if the ConBee II is attached directly to the USB port or is located near USB 3.0 devices such as external hard drives or memory sticks.

  2. Check that the communication between ConBee II and deCONZ works.

    Screenshot: Firmware not connected

    If the Phoscon app in the Gateway Settings displays not connected instead of the current firmware version, it’s an indication that the communication between deCONZ and ConBee II could not be established. In this case the next steps should be performed to re-establish the connection.

  3. Check that the current deCONZ version is installed.

    This ensures that already fixed problems of earlier versions do not occur. To install the latest version, all steps must be performed at for the platform used.

  4. Check that a connected ConBee II is registered in the system.

    $ lsusb
    Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 001 Device 006: ID 8087:0a2b Intel Corp.
    Bus 001 Device 078: ID 1cf1:0030 Dresden Elektronik

    If the ConBee II has been registered in the system, the manufacturer and product code 1cf1:0030 will be shown for dresden elektronik and the ConBee II.

    If the ConBee II does not appear in the list and deCONZ is running in a virtual machine or a docker container, the USB device needs to be added to the virtual environment.

    In the case of Docker, this happens automatically when the container is started according to the installation instructions:

  5. Check that the serial interface is available.

    $ ls -l /dev/ttyACM*
    crw-rw---- 1 root dialout 166, 0 27. Jun 11:39 /dev/ttyACM0

    Depending on whether other USB devices are used, the device file of the ConBee II is created with a consecutive number as /dev/ttyACM0 or /dev/ttyACM1.

    Important: In order to have read and write access to the device, the user must be in the dialout group as described in the installation instructions.

  6. Check that the ConBee II firmware is installed and up to date.

    Note: If a previous update has failed, the firmware will be reinstalled.

    • Close deCONZ if it’s running
    • Unplug the ConBee II and wait 10 seconds
    • Connect the ConBee II again and wait 10 seconds
    • Install the latest firmware

      sudo GCFFlasher_internal -d /dev/ttyACM0 -t 60 \
      -f /usr/share/deCONZ/firmware/deCONZ_ConBeeII_0x26490700.bin.GCF


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