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I just wanted to say thanks for everyone's help in teaching me one or two things about which I was clueless before. In summary, I was able temporarily work around failure of the central heating by manually opening the radiator circuit valve (which was broken) on the front of the water tank...

"The roomstat should make a click every time you change the setting up and down around the room temperature, is it doing this?": No it isn't. The only time I've had the room thermostat give me a click since investigating this problem was when I bought a brand new replacement and fitted it...

Ah, so these valves (whether Y or S plan) all live with the water tank, not within the gas boiler unit itself then? I assumed it'd be part of the gas boiler. My water tank and accompanying piping appear to have two of these motorized valves - at the highlighted locations - and according to...

Hi Ian. I'm afraid I don't know the answer to that; those are new terms to me. From what I can see, the distinction is whether there's one 3-port valve serving both hot water and heating circuits vs two 2-port valves, one for each of the hot water and heating circuits, but otherwise, they both...

I'm trying to learn a few things while attempting to do some basic diagnosis of what may have caused a problem with my central heating. I have a Glowworm flexicom 15hx gas boiler for hot water and central heating, with a Drayton LP241 programmer/controller. These heat my hot water just fine...