Heating circuit above ceiling. Pipes drop down to radiators on ground floor. Fitted replacement downstairs radiator but it won't heat up. Blead them all regularly and always get a little air in one upstairs radiator.
did you replace the rad valves ? could be one of the old ones sticking. More likely to be an air lock in the pipe work on the drop feed. Try closing all other rads and turn on your heating to see if this shifts the air.
wullie
December 2008
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