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Knocking Radiators

Joined
28 Jun 2004
Messages
253
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2
Country
United Kingdom
My rads keep making a knocking sound, I assume when the TRV's are shutting down. There's an automatic bypass valve fitted and the system is all fernoxed. Is there any way of getting rid of the noise?
 
trv,s are on the wrong side .take the top off and see if the noise stops ,if so its a switch job
 
Not sure about them being on the wrong side, the TRVs are all bidirectional and I seem to remember it was OK when all the TRVs were all fully on during installation. Only really started to notice the noise after the TRVs were turned down because some of the rooms were too warm. Could go back to having all the TRVs fully open (as some are) but then why install TRVs.
 

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