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Hi, I have a query relating to the radiators making a banging noise every so often, there is no consistency to it from what I can see. My boiler is a combi with only 6 Radiators. The banging doesn't happen in all the radiators just one or two and can be stopped by turning the radiator...

I was about to install a dimmer to replace a single switch running 3 lights in one room, took the face plate off and found that 2 red (live) wires go into the switch in COM and 1 into L1 and the 3 black (neutral) joined and not connected to the switch, and nothing into the L2 - my dimmer has an...