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On removing the pump head how easy/likely is it that I would damage the seals in doing so so it leaks when I put it back together again? The pump is mounted in the boiler itself just above a bunch of wiring (it's right over the front control panel) so even a slight leak wouldn't be good (it's...

Yes and yes. The reason I started fiddling with this in the first place is I've been finding it very tricky to balance a couple of the radiators in my flat. They remain luke warm whilst everything else heats up relatively well. If I shut off all of the radiators (via closing the TRVs) other...

Is it possible to clear out a pump impeller? My current plan was to see what the clean did and then potentially replace the pump if I was still having issues, does that sound sensible? I did wonder if I had a partially closed valve causing issues. The two pipes that make up the radiator...

It's an Ideal C80FF

When I turn on my central heating the boiler fires up but doesn't stay fired up for long, the burner goes on for maybe 20 seconds before extinguishing. It will fire up again after 2 or so minutes for another 20 seconds and this pattern repeats. The output pipe for the radiator circuit goes...