Nest fire Alarms not working with Xfinity new Gateway GB8 ModelCGM4981com

[CLL]

I replaced my old Xfinity X1 Gateway with a new one. I have a GB8 Model-CGM4981com. My Nest Fire Alarm's will not connect to the new X1 Gateway.  When I try to connect it just says something went wrong this device can't be set up, with a yellow exclamation point. These are gen-2 Nest Alarms. They worked yesterday before I disconnected the old  gateway. I have deleted them from my account and deleted the Nest app and downloaded the App again. No matter what I do it will not activate the Alarms. I have taken the batteries out and reset the Alarms many times does not make any difference.

Has anyone else run into this? I would appreciate any help on this. Worked with Xfinity She could not fix problem escalated to advanced tech support.

Thanks Cindy

[GabrielaG]

Hi @CLL,

Thanks for reaching out to the Google Nest community. I'm sorry to hear that your Nest Smoke Alarms are not working with the new Xfinity Gateway GB8 ModelCGM4981com,  but there's no need to worry; I'm happy to help you right now.

I appreciate your effort in performing the troubleshooting steps. Can you please confirm the information below?

• How many smoke alarms do you have?

• When you reset your Smoke Alarms did you hear the version number?

• Do you see error codes or messages in the Nest app when you are trying to set up the Smoke Alarms?

Any additional details you can provide will be helpful.

Best regards,

Gabriela