Hot water but no heating.
We have installed our Tado extension kit and smart thermostat, hot water works but no heating. We have a gravity fed system and have already contacted Tado for the driver we need but installation said it should work if hot water is kept on, it doesn't and Tado have not responded in 2 days. The 'live chat' has not been any help as there has been no response and I have left a voicemail but again got no response as yet. This is now our second day without heating so any advice or suggestions would be great! Thanks.