Service, Wi-Fi and Ethernet LEDs will all flash to varying degrees (green or amber) according to the amount of traffic that is passing over the interface. This indicates the normal operation of the router. Power and Broadband should always remain solid green for satisfactory operation. A red light requires a reboot – turn Power off, wait 15 minutes, and turn on again. If it remains red, please report this to customer support by phone 01635 898762 or email email@example.com.