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clanking radiator!!!

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Postby rose » Wed Feb 02, 2011 10:48 pm

having problems with heating system...some rads are very hot and some are warmish/but more on the cold side. one radiator in particular starts clanking when (i think) the target temperature has been reached, but not too sure if that is right. I feel that some rads are drawing heat from others...could this be right? any advice welcome
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Postby htg engineer » Sat Feb 05, 2011 7:12 pm

Do you have trv's fitted ? if so the pins can sometimes stick.

The system may also need venting or the pump may be on it's way out.

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