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After replacing a TRV on a radiator recently the normal running pressure of my sealed system has increased from approx 1.75bar to just under the pressure release value of 3 bar. In fact, the pressure exceeds 3 bar slightly and water is lost and the cool system pressure is then sits at just under...

I have a very recent RCD protected split load consumer unit. The RCD side protects our 3 ring mains only. I live in a rural area with overhead lines and I am on PME. The problems I am about to describe are all intermittent and we can go several days without problems, then encounter 6 or more...

I had a new oil fired HW and CH system installed about 4 months ago and from day 1 there has been an annoying clicking/light tapping sound coming from the region around the pump/three way valve when the boiler is providing HW only. The sound is tinny and does stop for 10-20 seconds from time to...