On 11/03/2020 12:10, AnthonyL wrote:
On Tue, 10 Mar 2020 19:50:56 +0000, rick
wrote:

On 08/03/2020 09:04, Tricky Dicky wrote:
The OP did not mention if the heating system had TRVs throughout. I have come across systems where all there was a programmer with no room stat and all the temperature control was through the individual TRVs in fact a friend of mine had that exact system. I have virtually the same having equipped all my radiators with Hive smart thermostats except for the bathroom which is the official system bypass and the kickspace heater in the kitchen which has its own thermostat. If the OP has a system as mentioned above the unwired room stat may just be a redundant item from a previous setup.

Richard


TRVs on all rads
That is why I think they did not wire in the wall stat.
According to British Gas, even if TRVs fitted there should still be
separate thermostat to prevent cycling of boiler when no zones calling
for heat.

What cycling of the boiler?


if all trvs shut down because the temperature has reached the required
level, the boiler just spends its time short cycling - heating up the
pipes and then switching off again. While the pump runs all the time
against an almost blocked circuit


--
Its easier to fool people than to convince them that they have been fooled.
Mark Twain