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Hi All,

We have a few problems with the water system on Dolly.  The hot water works intermittently and the cold water refuses to work at all.   This is not just the kitchen taps but also the bathroom taps.   When the hot water works the pump runs whereas the cold taps never seem to start the pump.

My suspicion is that some (maybe all?) of the micro switches are faulty but it does seem odd that there are exactly the same symtoms on two separate sets of taps!

So a question.......
Are the micro switches on all four taps simply wired in parellel so that switching any tap on starts the pump or is the wiring arrangement more complex than that?

Thanks Mudlark,

The installation definately doesn't involve a pressure switch as when working normally, turning a tap on causes the pump to run and there is no pressure vessel included.   If the micro switches are simply connected in parrallel then I am sure that I can solve the problem    I was thinking that it might be more complex with hot and cold tap electrical circuits doing different things but the more I think about it the more I realise that isn't necessary.

So the problem now is to work out how to  easily get at the taps and their wiring!!!

Or perhaps converting the system to a pressurised system might be a better option???    Presumably there is a single pressure vessel plumbed in before the hot water tank which feeds both the hot tank and the cold water taps with a pressure switch to operate the pump as needed.   Might it be an idea to simply (?) fit a pressure vessel???