Meaning of the symbols

The display also shows the desired target temperature aand the the status symbols as well. They indicate the current situation of the room thermostat.

Symbol Meaning
Shows that the batteries are worn out. Please change the batteries immediately.

Displays the quality of the radio reception. A continuous light signals good radio reception.

The symbol flashes if the radio transmission is weak.

Then check for interference (such as microwave, cordless phones) and building conditions at home.

Child protection is switched on.
Manual operation of the room thermostat is disabled.

Shows that frost protection has been activated.
Displays an open window. This appears if a window contact is open or if there is a dramatic fall in temperature (e.g. open window).

Shows which operating mode has been activated. (manual / automatic).  In the manual mode, timed scenarios such as e.g. Lowering the room temperature in the absence, ignored. The room temperature will instead be regulated to the value shown on the display.