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My daughter has have just bought a 1960's house which has a disused chimney in the kitchen. The opening has been sealed, and plastered over, but is showing signs of damp. A plumber quoting for a different job advised me to have the chimney capped and an airbrick fitted at the base on the...

Gosh, I've no idea! It's old, big, copper, and covered in foam. It has an electric immersion heater in the top (working well) and the central heating going in at the middle and out from the bottom. The valve is on the flow side. There's a break on hot thermostat- also a Honeywell l641a1005. I...

There are 3 Honeywell 2 port valves- I believe they are all V404. Two of them are next to the pump in the attic. This one (in the airing cupboard) is next to the immersion heater with its own junction box. The box has the cylinder thermostat (2 wires) the Honeywell (5 wires) and two 3 core...

The valve has been in place for 20 years, but I did move the junction box, and though I made noted about what went where, I distrust my original diagrams. To make things worse, it has actually never supplied hot water independent of heating- so I suspect the original wiring was incorrect. Is...

I am not getting hot water- unless I have the Honeywell V404 3H1056 jammed in the open position. I have tried applying a direct 240 ac across the blue and brown wires (earth also connected - orange and grey terminated) I was expecting to see the lever at the bottom move to the open position-...