What is the energy saving mode in Thermostat TC350 and How to activate it ?
Eco Saving Mode – Pressing the Eco button starts the energy savings mode. In cooling mode, the set-point is automatically adjusted to 26°C and the fan speed is set to Low. In heating mode, the set-point is automatically adjusted to 18°C and the fans speed is set to Low. The user can exit the energy saving by pressing the Eco button.
Here is how to activate it .