Hi clarielb444,
Thank you for reaching out to us here on the Community.
I am very sorry to hear you are experiencing a red light issue with your Hub 3.
Has the Hub been rebooted since this issue started?
Is the Hub hot to touch or making a louder than normal fan noise?
Also, is the equipment in an open/well ventilated space?
Please let us know and we will be happy to assist further.
Thanks,
Nat