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Mend Ravenheat CSI 120N(T) Boiler Noise

how can i fix my ravenheat condensing combination boiler csi 120n(t)low nox?

i have a ravenheat condensing combination boiler when central heating is about to switch off theres a loud vibrating noise and i don`t know whats wrong with it and i have to switch it off manually .can anyone help . I want to know whats wrong with it thanks

mr patrick masons
February 2010

Ravenheat Ravenheat CSI 120N(T)Heating, Home Heating Systems Boiler Ravenheat Noise

had this problem when hot water flow was reduced it was the gas valve, ravenheat replaced it under warranty been ok since

ds
March 2010

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Ravenheat CSI 120N(T) Boiler: Noise & Fixes