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Please help - I've just changed the pcb on my suprima boiler and now this !!! :shock: When I turn the hot tap on it runs hot for a few seconds then runs cold. Everything seems to be working fine though elsewhere ?? We have hot Central Heating and the Suprima seems to be working fine. Both...

I need to drain my heating system to move the pipe work for a rad. I've been told that all I need to do is Turn water/power off to the boiler, close the isolation valve from out the header tank and open a draindown valve downstairs. Does anyone know if its a simple as that?? Is there anything...