after a recent leak in my central heating system which is now fixed, i've refilled the radiators and fired the boiler up and the radiators upstairs are hot but downstairs are staying cold, i've tried bleeding them and still no joy! any help plase

Gary Gilbert, December 2013

close the valves on the upstairs radiators to make the water go downstairs close all but one downstairs rad until your'e happy there's water flowing then bleed that one then open another rad and repeat until all rads are hot

toptrish, December 2013