The SPC Hestia has an smart function that prevents possible freezes in the heating circuit.
This function is activated automatically if it is enabled on the device, working when the temperature drops below 5 °C and the thermostat is turned off.
The boiler will operate until it reaches 8 °C and then it will turn off again, avoiding the circuit being damaged and the water that is inside it freezing.
This function can be enabled or disabled via the advanced settings of the thermostat.
To be able to enter this mode, you must first enter Standby mode by holding the button pressed until that the display shows “OFF”; then press and hold the button for 4 seconds.
Then you will need to navigate to the ninth and last setting that the thermostat allows with the button . The display will show the following:
You can modify it with the and arrows.
Once the adjustment is finished, just press the button to save changes and exit advanced settings.