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I have an older house and one of the rad valves has just broken off, and I think the rest will soon do the same as they're all the same age. The issue is that the trv I bought in a plumbers shop doesn't fit. The finger bits (technical description;-/) don't fit over the thread on the radiator to...

Can anyone please explain the wiring on my old thermostat. I would like to replace it with a modern Salus wired controller (don't know which yet) I don't see the need in using a wireless system so I'm just going to replace the control with a modern wired unit. Currently the boiler has the 7 day...