topic Re: Openreach ONT has a red PON light in Broadband

Openreach ONT has a red PON light

YuanYuan — Thu, 03 Sep 2026 21:12:06 GMT

My Openreach ONT has a red PON light. Power and LAN are green and Alarm is off. I’ve restarted the ONT, but PON is still red and I have no internet.

Re: Openreach ONT has a red PON light

caesarome — Thu, 03 Sep 2026 21:17:25 GMT

@YuanYuan

Try running this line test to see if it finds any faults:
https://www.sky.com/help/articles/broadband-diagnostic-start

You can also run the test via the MySky app on a mobile data connection.

After this has finished and if it reports back all is good click on broadband to run an updated test. If you get amber or red please follow the on screen instructions.

Re: Openreach ONT has a red PON light

YuanYuan — Fri, 04 Sep 2026 07:25:13 GMT

Thanks for your reply. I tried to restart the ONT several times, but PON is still red and I have no internet. Therefore, I have requested for an engineer visit.