topic Re: Cannot connect to nest thermostat in Nest Thermostats

Cannot connect to nest thermostat

LDG — Tue, 20 Feb 2024 22:07:37 GMT

I have a UK thermostat with heatlink

I have reset the thermostat by holding the screen nest button down

when it reboots I get a symbol of the neat home plus a down arrow above it.

when I try and connect in the app it will not scan the barcode

it then try’s without the scan get a error TD 30

Re: Cannot connect to nest thermostat

Frustratedddd — Thu, 22 Feb 2024 17:41:59 GMT

I can see after 24 views everyone has rushed into help you!

First of all what exactly is the problem, does it do anything?

Are you saying that you cannot setup the thermostat from the start?

I can see you have reset the display, but why?

Setting the thermostat up from scratch does not need any QR code if you want a simple setup.

Explain exactly what you have done or trying to do, and perhaps we can help.

Re: Cannot connect to nest thermostat

LDG — Fri, 23 Feb 2024 16:01:44 GMT

I had the unit installed and working fine for about a year.

It lost connection with heatlink

I followed trubleshooting which led me to reset.

After reset the app will not communicate with the Nest

Re: Cannot connect to nest thermostat

Frustratedddd — Fri, 23 Feb 2024 17:24:15 GMT

OK I think I understand where you are.

Your system is working fine except you have no App access - correct

Forget the bar code try this to pair the thermostat to the app.

From the Display, open, Settings - Nest App - Get Entry Key

Make a note of the 7 digits shown

Go to your phone/pad/PC - Open the app - Settings - add Product

Follow the instructions to install the thermostat.

You maybe using Google App which may be a little different, but the principle is the same. get the 7 digit code first, and then enter that when asked.

Re: Cannot connect to nest thermostat

LDG — Fri, 23 Feb 2024 18:49:18 GMT

thanks for help

the Nest does not respond to rotation or short push on the button.

after reset it displays google colours and then changes to house symbol with down arrow above the house

Re: Cannot connect to nest thermostat

Frustratedddd — Fri, 23 Feb 2024 20:09:43 GMT

We need to go back a bit here! Are you saying you have a UK setup with Heat Link?

the logo you see on the UK display after restart is a White House only, nor arrow or Google colours. Do you have the Google logo show on the display when you say colours?

Have a look at this also, remove display from wall plate and check the pins on the back are all straight.

Re: Cannot connect to nest thermostat

LDG — Fri, 23 Feb 2024 20:23:04 GMT

thanks again

yes, it is a UK version with heatlink, I use on a gas fireplace that needs a dry contact

the unit is table mount

when first powered on the G symbol in multi colours show, then a ouline of a house with a down arror above the house, all inside a white rectangular outline

see picture below

Re: Cannot connect to nest thermostat

Frustratedddd — Fri, 23 Feb 2024 20:47:49 GMT

Yet again another clear situation where this forum fails. There needs to be a section for UK, USA and 3rd gen, E gen thermostats. Guessing which country users come from and which thermostats they have is difficult. Rant over, Mods wake up!

Anyway, you have an E generation, and I was thinking you had a 3rd gen!

I have just found this info, see if this may help.

The TD030 error can occur because:

The assisting device that your thermostat uses to communicate within a thread network is powered off.
Your phone and the assisting device are on two different Wi-Fi networks.

To check that the assisting device is working correctly, follow the troubleshooting steps below.

Make sure that the assisting device is powered on. If it isn’t, charge it or connect it to a working power source.
If the assisting device isn’t in use, remove it from the Nest app.
If you have more than one Wi-Fi network, you may have to move your phone to the same network the assisting device uses.

Re: Cannot connect to nest thermostat

LDG — Mon, 26 Feb 2024 13:23:01 GMT

thanks for your help

I do not understand what "assisting device" is.

I am using app on my phone.

larry