8
The marking on the clock-ring indicates 
when comfort temperature is chosen 
and when economy set-back is 
switched on. A fl ashing point indicates 
the actual clock (every half hour).
If the temperature is lowered to mini-
mum (+5ºC), a frost symbol will appear 
in the display, indicating that the ther-
mostat will maintain minimum +5ºC in 
the room for frost protection.
If the temperature is turned below  
+5ºC, the thermostat will switch off.
(Only possible with the timer off).
When the temperature is raised again 
the thermostat will automatically 
switch on.
If the Thermostat EFIT 540/550 only 
uses a fl oor sensor, the display will 
not show the actual temperature (5º to 
35º), but a scale from 0 to 10.