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I have a Honeywell Evohome, connecting to several HR91 TRV's across the house. The hallways and a couple of rooms don't have TRV's, and the EvoHome controller acts as the temperature sensor for those rooms, labelled as 'Common Areas'. I want the 'Common Area' zone to be able to call for heat...

I have a Honeywell Evohome, connecting to several HR91 TRV's across the house. The hallways and a couple of rooms don't have TRV's, and the EvoHome controller acts as the temperature sensor for those rooms, labelled as 'Common Areas'. I want the 'Common Area' zone to be able to call for heat...

Right I've just played around with it and it's almost certainly the motor, I am pretty sure its jammed. I will get out and replace it now. Does this box do anything except control the valve, does it pump or anything similar?

Right!! Thank you so much for your help. So the bottom silverbox, which I believe is for the HW, has resistance. The top one, does not. It's totally lose. It lights up if I turn the CH on, but you're saying that the internal motor is probably busted? Should I replace the whole valve or is...

I am in Tamworth, North Birmingham/Staffordshire. This pic is showing the evohome controller and the boiler. You can see the flame icon showing the boiler is lit. I had to move the controller to take the pic, so it lost connection to some of the radiator valves, but it should show the CH is...

I'm not disagreeing, I honestly don't know for sure. I just know that the radiator system is powered by a single pipe that runs throughout the house. Each radiator does not have it's own return pipe. Whatever the system is, I know that it's quite unique and a regular engineer won't work on it.

I have tried this. I have cycled the boiler and the honeywell/Hot Water/Pumps via the circuit breaker, but the boiler reignites when I turn it back on.

Thats what we were told by the previous owners. Single Pipe System in that each radiator throughout the house is fed of a single pipe. It might be a bit different with the hot water factored in? I am trying to get the installation engineer out to do a proper handover, so I can clarify all of...

I did think it was odd the smart meter would have this effect, but it only seemed to happen after they came. I have recently moved into this property, so I do not know the ins and outs of the system. I am also a total novice, so I don't know all your answers. I have contacted the person that...

Double post. Edited.

We had a smart meter installed on the 6th. Since then, the boiler has been constantly ignited, despite all hot water and heating switched off. I think the culprit is a Grundfos pump. I am absolutely clueless on plumping, but need to get this fixed as our boiler is a 50kw unit and gas is...