tado° Smart Thermostat V3+ app can't find it: what to do

The app does not find the thermostat during setup.

We could not fully consult the manufacturer's support page for this model; the steps are general and may differ in details.

Most likely causes

usually this

Phone is on 5 GHz or a different network

Check your phone's Wi‑Fi settings and switch to the 2.4 GHz network if available.
If your router uses one name for both bands, temporarily disable 5 GHz in the router or connect another device explicitly to 2.4 GHz.
Try the setup again with the phone on 2.4 GHz.

common

Thermostat not in installation mode yet

Make sure the thermostat is powered and showing the expected installation screen in the app.
If unsure how to enter installation mode, follow the step-by-step instructions shown in the tado° app.
Try power-cycling the thermostat and start the setup again.

sometimes

Phone permissions blocking discovery

Allow the tado° app permissions for location and local network access when prompted.
Turn off battery saver or privacy modes that may block network discovery.
If possible, try setup with a different phone.

Factory reset

Warning: a factory reset erases all thermostat settings, Wi‑Fi connections and any links in the tado° app. You will need to re-add the device afterwards.

Ensure the thermostat is powered and the screen is active.
Use the thermostat menu to find 'reset' or 'factory reset' if available, or use the tado° app's device settings to initiate a reset.
If no menu option is available, power-cycle the thermostat following the installation guide and check whether a reset option appears after restart.
After reset, open the tado° app and add the thermostat again using the standard setup procedure.

Frequently asked

Why does the app keep asking for my Wi‑Fi password?

The app needs your Wi‑Fi details to connect the thermostat; enter the password only into the tado° app.

Does the thermostat use 5 GHz Wi‑Fi?

tado° typically uses the 2.4 GHz band for local connectivity; use 2.4 GHz during installation.

Will I lose schedules after a reset?

Yes, a factory reset removes local settings; you'll need to set up schedules again in the app.

Can I link the thermostat to Google Home or Alexa?

Yes — link your tado° account to Google Home, Alexa or Apple Home via their respective apps.