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diy plumbing?

Vokera Linea 24 Hot water runs hot and cold and does not fill a basin. CH engineer has diagnosed sludging. A magnetic filter was fitted on outgoing side of boiler in 2009. Does this have any significant impact on sludging in the boiler
Hugh Devine, February 2013
I suspect a blocked heat exchanger.remove it,clean it and then refit.

A1, February 2013
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