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Radiators do not fill after replacing valves.

https://forums.diydoctor.org.uk/viewtopic.php?f=177&t=19666

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Radiators do not fill after replacing valves.

Posted: Fri Aug 28, 2009 1:11 pm
by Gordon White
Replaced radiator valves, switched on water, header tank fills ok but not the radiators - no hissing when I try to bleed. All lockshields and valves are open. Any suggestions?

Posted: Fri Aug 28, 2009 8:40 pm
by htg engineer
Blocked cold feed or airlock, turn on central heating for 2 or 3 seconds, see if the pump clears it.

You could backfill with a hose connected to a radiator valve or drain point.


htg
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