AIUI, when FTTP is installed by builders on new build houses they never connect the internals to the externals. The duct from the street chamber contains only a pull cord for OR or the contractor to draw the fibre through, with that ducting ending a few cms up the outside wall.

I expect your setup is similar, maybe with the ducting ending in the comms room.

I thought that on builder completion they would notify OR, to complete the installation. That step missed perhaps?

In reply to a post by Pheasant:

The summary is "red means dead" - either no light (or not enough) at the ONT. Call service provider to resolve.

Good advice, maybe it should be added to the official documentation