What do the LED indicators on your Wi-Fi extender (also called PLC adaptater) mean?
To activate or deactivate Wi-Fi.
To secure your Wi-Fi network and connect your WPS device.
To synchronise your PLC adapters and configure the Wi-Fi network.
If the dLAN LED is orange, red or off: check that the cables are properly plugged. If that doesn't work, restart the Wi-Fi extender by pressing the PLC button for 12 seconds.