I have installed two nest thermostats at my home about 6 months ago . One of thermostats lost Wi-Fi

[Daljinder]

I’m trying to connect to Wi-Fi and to nest app but it is not letting me do it

[David_K]

What model of thermostat is it? Are you seeing an error code on the thermostat or in the app?

How to tell which Nest thermostat you have - Google Nest Help

Nest thermostat is offline - Google Nest Help

[Daljinder]

It says on thermostat nest.com/w5

[Markjosephp]

Hi everyone,

I wanted to stop by and see how I could help.

Thanks for looking into this, @David_K.

@Daljinder, I appreciate your update, and I'm sorry to hear that you're having an issue reconnecting your thermostat to your W-Fi network. I'd be happy to take a look at this for you.

Could you provide a rundown of all the steps you've tried? Try restarting your thermostat by pressing and holding its screen for 10 seconds until it shuts down to refresh, and let me know if you're still getting the same message code.

Regards,
Mark

[Jenelyn_O]

Hello there,

Chiming in — could you please provide the needed information asked above? It will help us to move forward.

I appreciate your help, @David_K and Mark.

Best,

Jenelyn

[Jenelyn_O]

Hi Daljinder,

Due to inactivity, we'll go ahead and lock this thread in 24 hours. We'd be glad to help you further so if you still need assistance, feel free to start a new thread.

Thanks,

Jenelyn

[Daljinder]

No I didn’t 

[Daljinder]

I lost connection to Wi-Fi and it won’t let me connect now 

[Markjosephp]

Hello Daljinder,

I've duplicated your thread in the main one here. You’ll receive all updates on this issue on the main thread, and we recommend updating and checking this thread when needed.

Regards,

Mark

[David_K]

We're going to need more information to be able to help you. Please help us to help you by checking the questions I asked above. The links I provided will help you answer those questions.

[Daljinder · Accepted solution]

Nest 3rd Generation 

[David_K]

So the thermostat still has power, but no longer connects to Wi-Fi?

You're not seeing an error on the thermostat itself or in the Nest app?

What happens when you try these steps?

Nest thermostat is offline - Google Nest Help