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Vokera 30 HE playing up. Recently drained CH system to change rad valves. Refilled and switched on boiler - Red failure light lit up and indicated fault '10' (failure to ingite/stay ignited). Checked pump - working. Checked water pressure - 1-1.5 bar- fine. Checked condenser drain pipe - not...

I have recently replaced two old rads with two new column rads (same equiv btu) on the ground floor of my house. At the same time I thought it would be sensible to include TRV's. Even though the previous set up seemed to work perfectly, I now find myself with two warm at best/cold at worst rads...

I am trying to identify the purpose of, and work out whether I still need a number of strange electric fittings found throughout my house. They are placed high up (50cm below ceiling) in most rooms (not bathroom or hall). They are MK fittings, almost flush with a small flat plate containing...