There's no recognised error state for an orange LED on the Hub 3. If you haven't already, try a pinhole reset, see if that fixes it. If not, there's a probable hardware fault. Whilst ordinarily that would mean a replacement hub, VM seem to have got themselves in a catastrophic pickle with regard to supply of new hubs, and availability is poor (unless of course, you're a new customer, strangely enough). Try the pinhole reset, see if either the colour changes to white (or magenta if using in modem mode), or the connection problems resolve.
If the connection problem doesn't improve, then connect to the hub by clicking on this link http://192.168.0.1/ That should pull up the log in page for the hub. But don't log in, just click on the link "Check router status" That'll bring up a window with five tabs. Open the Downstream tab. Select all the text (Ctrl-A if using a keyboard), copy it (Ctrl-C), then paste it (Ctrl-V) into a reply here as text not images or screenshots. Post that, do the same for the Upstream and Network log. You'll get an error message when you post the Network log, just click on "post" a second time. Then we can check for any obvious problems with power, noise or error counts.
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Thanks for your post and for reaching out to the Community Forums, Mark
Sorry to hear that you have been having connection issues with your broadband. I have been running some remote diagnostics which has confirmed some errors with your connection. I have set up an engineer’s visit for you which you will be able to view from your online account here.