I moved house just over a week ago and until last night I hadnt used the central heating. I've been using the hot water system which works fine, although I noticed that the radiators were getting warm when the hot water comes on so i turned each of them off via the valve on each radiator. Anyway...
I'm trying to replace the pull-cord switch in my bathroom.
The cord operates both the light & extractor fan (fan switches off when light goes off ie. no time delay).
I've removed the old cord/switch and discovered 2 cables coming through the ceiling, each with a red, a black and a yellow/green...