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After draining several pints of water from various rads - at each flow return ( locking off each side in turn - a few of the rads came on - then went off never to come on at the same time again. I managed to get the bathroom rad (towel rail), closest to the airing cupboard very hot -...

Locked off all rads bar the one with drain off valve downstairs After releasing several pints - hot water was coming out of the drain valve , is this back draining from somewhere else in the system as the pipe feeding the C/H from the side of the mid position valve is still stone cold -...

Hi first post so please accept my apologies if I have tread ones toes - I have read and read and read trying to make sense of my central heating fault I have also spent days googling the issue to no avail so any help would be apprecaited before I resort to draining the Central heating and...