If the tado° app says that the Smart AC Control cannot be found, you are most likely not connected to the wireless access point created by the device.
When connected to a smartphone or computer, the Smart AC Control shows two arrows on its display.
If the Smart AC Control is not connected, it will show a unique 4-digit code on its display.
If this is the case, go to Wi-Fi settings on your smartphone or computer and connect to the Wi-Fi network tadoXXXX as explained in the articles below:
Please note: the wireless access point created by the Smart AC Control has no internet access. Some smartphones don’t allow connection to such networks. If you can’t connect to the wireless access point, please make sure you’ve turned off your mobile data. Then try again.