Temperatures and Settings
SYMBOL | MEANING |
 | Measured Temperature Current measured temperature. |
Home Mode | |
 | Home Target Temperature Smart Schedule is active. tado° is in Home Mode and is set to the displayed target temperature. |
 | Hot Water production in Home Mode (on/off) Smart Schedule for hot water is active. tado° is in Home Mode and hot water production is currently on/off. |
 | Home Mode Hot Water Target Temperature Smart Schedule for hot water is active. tado° is in Home Mode and the hot water is being heated to the displayed target temperature (only available for supported systems). |
Manual Control | |
 | Manual Target Temperature Manual Control is active. tado° is set to the displayed target temperature. |
 | Hot Water production in Manual Control (on/off) Manual Control is active and the hot water production is currently on/off. |
 | Manual Hot Water Target Temperature Manual Control is active and the hot water is being heated to the displayed target temperature (only available for supported systems). |
Away Mode | |
 | Away Target Temperature tado° is in Away Mode. It is set to the displayed target temperature based on the settings you’ve specified for the Away Mode. |
 | Hot Water production in Away Mode (on/off) tado° is in Away Mode. Hot water production is currently on/off based on the settings you’ve specified for the Away Mode. |
 | Away Mode Hot Water Target Temperature (adjustable) tado° is in Away Mode. Hot water is being heated to the displayed target temperature (only available for supported systems) based on the settings you’ve specified for the Away Mode. |
 | Open Window Detection An open window has been detected and heating in this room is currently turned off. |
Errors and Warnings
SYMBOL | MEANING |
 | Low Battery The batteries are running low and need to be replaced. |
 | Depleted Battery The batteries are depleted and need to be replaced (changes on the device user interface are blocked). |
 | Firmware Update The device is updating to a new firmware version. |
 | Configuration Download The device is downloading its configuration. |
 | Synchronising Changes made to tado° have not yet been synced to the device. |
 | Legionnaires’ Disease Protection The boiler is firing to disinfect the hot water. |
 | Pairing Error Pairing not successful. |
 | Default Configuration Error The wiring does not match the way the device is set up. A voltage has been detected on the low voltage terminals (+ and -). |
Installation and Reset
SYMBOL | MEANING |
 | Pairing The device is looking for an Internet Bridge. |
 | Paired The device is successfully paired to an Internet Bridge. |
 | Installer Menu Entry point to the Installer Menu. |
 | Reset Pairing Reset Pairing (used when pairing device to a different Internet Bridge). |
 | Factory Reset |
 | Exit Menu |
More information:
What do the symbols on the Smart Radiator Thermostat user interface mean?