"TheScullster" wrote in message
...
I have an Aqualisa Aquastream power shower which has given constant grief!
This is the type which uses gravity feed hot and cold water with a low
voltage accelerator pump in the shower unit.
It's latest trick is to screech loudly after a few minutes use.

Does the flow of water change when it does this suggesting that it might be
related to air entering the system? Does it screech continuously?

The pump has been replaced by their service "engineer" but no change.

So the old pump also screeched in the same way?
Does the sound seem to be coming from the pump unit itself? Doe sit change
if you hold onto or waggle any of the pipes or the pump unit itself?