TRV's I am assuming these are the temp valves on each rad - in which case I don't have ANY of these - just flow valves (they're 23 years old).
Yep, green light on boiler stays on
The other wire not connected to anything is brown (NB this is the wiring scheme that was installed when house was built if that makes any difference - not the new colour scheme)
Yep, green light on boiler stays on
The other wire not connected to anything is brown (NB this is the wiring scheme that was installed when house was built if that makes any difference - not the new colour scheme)