Hi George,
Thanks for your post, welcome to the Community Forums.
I'm sorry to hear you had a red LED on your Hub 3, we'll be more than happy to help you with this.
I've send you over a private message so I can take some details and arrange an engineer visit, if you could also just confirm that your hub is in an open and clear space, that would be great.
Look out for my message over at the purple envelope
Beth