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Radiators are totally working fine.. equal heat bloom on the Thermal imaging camera, but it shows the hot water is only getting halfway from the pump.to the cylinder, even when 3W valve is both positions All 3 Radiators are all hot which proves flow from pump to 3W valve port A to rads and...

Ok I love a challenge!! My house heating system has had a pretty tainted history... It`s an indirect DHW, open vented pumped system. In Dec I encountered 2 cold rads, only have 3 rads in the house, so we drained down the system. flushed the rads but this didn't really help. we...

i` noticed yesterday that my HW from taps was tepid, not hot as it was few days prev, the CH pump running okay, rads nice and hot... Switching the motorised valve into manual i felt some resistance where it felt like it as trying to go back to auto, pipes seem pretty hot feeding into and out...

system is open vented, 3 rads, 1 downstairs very close to the boiler, 2 also down stairs, none upstairs. problems started with 1 rad down stairs stone cold, other two are red hot. bled problem rad and got hot water coming from the bleed point, but rad refused to go hot I...