[Mick and Pat]

Hi simsy56,

Is your water filling point also in this locker?

The water filling point has a none return valve which sometime can fail through age or debris stopping the valve from properly closing.

Now you may see a slight drip but when it will really pour our is when you build up pressure with your water pump,the leak will also cause your pressure to drop causing the pump (if left on) to continually keep switching on.

Hope this helps?

Mick