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Hello! I am in the process of changing a light fitting but the wiring does not seem to fit with any I can find a description of. Any help would be very much appreciated! Through the ceiling there are two groups of wires. Group one has a red wire, a black wire and an earth (bare copper)...

Hello! We have a BIASI M90E 23S which seems to be playing up a bit... My wife complained that the water was going from hot (normal temp) to cold. I looked at the water pressure on the boiler and it had dropped low. I topped it up to 1 bar but later that day when the central heating ran the...