Danfoss LC-13 not working correctly?
i have a older version of Danfoss LC-13. My problem is i think my Radiator valve not working when its in sleeping mode. For example: I set the temperature in Thermostat section to 21C. After an hour, i woke up my Danfoss valve. Automaticaly set the temperature from 4C to 21C and i hear the sound of motor valve /that sounds good/. But when i set the temperature on the Zipabox from 4C to 21C im think the valve is still closed after an hour.
Can you help me?