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blockage?

rads up stairs geting hot plus hot water,rads down stairs staying cold. I have bled all rads ,still cold down stairs help
vince mc girr, September 2010
if the header tank was empty then you wouldn't get heat to the upstairs rads if the downstairs wasn't working.

more likely a blockage or the drop down pipes to downstairs are airlocked.

hi-spec plumbing & heating (essex), September 2010
Check that your header tank is not empty..or the pipes leading from them to the rads is not blocked.

Bob, September 2010