BT whole home mini shows red light when connected to new PN hub 2

[#1]

Hi. I’m new to Plusnet, my service started today. My PN home hub 2 system connected to broadband ok and is giving a good Wi-Fi signal. It replaces a BT hub 6, their physical interfaces look identical. I have plugged my BT whole home mini disc Wi-Fi mesh system into the home hub, but whatever I do I can only get a red light on the whole home disc, which indicates ‘no connection/ error’. I have followed all the advice on the whole home app (turn each unit off & on, do a whole home factory reset) with no success, I also replaced the Ethernet cable between them. I understood that these systems should work together simply, but they haven’t done so yet for me. Advice very welcome!

[#2]

Which LAN port on the Plusnet hub do you have the Whole Home primary disc connected to? You need to avoid plugging anything into the fourth port.

[#3]

Thanks for replying. It was in the one labelled WAN, which is the 4th port. I moved it to port 1 and that has solved the problem. Hooray and thanks! But why is the 4th port useless? It was fine on the BT router.

[#4]

On the Plusnet Hub 2, the 4th port is a dedicated WAN port. It's used for connecting to the ONT with Full Fibre

[#5]

Ah OK, thanks. I now see that this a difference between the two routers.

For some reason, my BT whole home mini discs do not want to connect to the home disc wired to the router. They also show a red light dispute me following the BT app instructions for connecting them and the wired disc giving a good Wi-Fi signal. Perhaps this is off topic here. If so, apologies.

[#6]

'fraid I don't know much about the whole home discs, but have you tried a factory reset of the other dscs ?

[#7 · Accepted solution]

OK I fixed my last problem by connecting each BT mini disc by Ethernet cable to the router. The BT app didn’t seem to mention this. All working now. Thanks again.