Tado and Constant call for Heat in Two Zone System
Posted: Sun Oct 28, 2018 3:21 pm
Hi guys,
I have a two zone system with boiler and megaflo. A separate unit controls the hot water. The thermostats are wired and battery powered.
Current thermostat wiring looks like this:
https://imgur.com/a/EEeOAhR
Black into middle. Brown into bottom.
I took the Tado wiring and copied it - black into NC, brown into common.
https://imgur.com/tsIe38E
However, the Tado is immediately and constantly demanding heat. The Tado unit and app clearly slows that it doesn't need heat and isn't switching on the heating, but my zone valve is lit up and the radiators are hot - so someone is lying.
Have I got the wiring right?
Cheers!
I have a two zone system with boiler and megaflo. A separate unit controls the hot water. The thermostats are wired and battery powered.
Current thermostat wiring looks like this:
https://imgur.com/a/EEeOAhR
Black into middle. Brown into bottom.
I took the Tado wiring and copied it - black into NC, brown into common.
https://imgur.com/tsIe38E
However, the Tado is immediately and constantly demanding heat. The Tado unit and app clearly slows that it doesn't need heat and isn't switching on the heating, but my zone valve is lit up and the radiators are hot - so someone is lying.
Have I got the wiring right?
Cheers!