Thanks for your advice and replies!
It is DEFINATELY the boiler making the noise...not that mad yet!
It has though got a lot better...Running the taps at full whack ha helped so I'm thinking it may have been started by air in the syste and perhaps just been upset by an airlock?
Will keep an eye on it though and report if it starts singing or indee starts talking to other appliances!
Thanks guys
Michael
snipped-for-privacy@gmail.com Wrote:
Hi Michael,
> As part of my kitchen refurbishment I rearranged
> various cables to/from the central heating timeclock.
> Instead of running two separate cables i figured
> that I could use one cable which was TRIPLE and
> earth: Live, Neutral and Earth from the supply at the
> boiler and a returning live from the timeclock via
> the thermostat to tell the boiler to fire.
>
> Many months after the successful alteration I was
> working at the circulator pump and heard a faint
> buzzing noise. My conclusion is that it is inductive
> pickup from the always-live wire to the demand-live
> wire since they run for umpteen metres and are
> roughly 1cm apart.
> I could be wrong, but that is my best theory. It still
> works okay.
>
> HTH
>
> Mung
-- mclannahan