cracking from raditor


Postby coantrim » Sun Apr 06, 2008 12:39 pm

the gas heating comes on at 08.30 hours and goes of at 22.00 hours.
from about 15.00hours loud cracking emitt from one raditor, which is turned off- any advice= charlie.
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Postby htg engineer » Mon Apr 07, 2008 10:41 am

Without more info it's hard to say what it is.

Do the other radiators have TRV's fitted - my thinking is do they shut down when the rooms reach temperature ?

therefore the pump is pumping against the radiator valves on the problem radiator - which are closed. Have you tried opening the valves on that radiator does the cracking stop ??
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