Re: water pump and shower wand
If you don't see any visible leaks, chances are the grey fill valve at the water tank is bad. When it is bad, water will continually flow through the valve and into the tank whenever the pump is on, causing the pump to cycle repeatedly. If you're connected to city water, a bad valve will allow the tank to overfill. It is a 1/2" angle stop valve that you should be able to find a replacement for.