All,
In case you were waiting with bated breath...
Judging by the 'glooping' sound as I opened the lockshield valve, the problem was a combination of sludge and a not-really-opened-enough lockshield valve.
The rad is now working perfectly. It's easy really, innit?
Thanks everyone.
Peter
In article , Peter Kemp writes
Well done.
I balanced a new system for a friend (via the lockshields) after the installer failed to do it and one radiator stopped working after a few weeks. The sealing washer on the lockshield had swollen in contact with the hot water, shutting it off. All was fine after a tweak on the balancing.
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