Whistling shower

[mdlyons]

I had a new shower fitted around 2 months ago, the shower is an Ideal Standard Trevi. It has started to make a whistling noise; this is not all the time and continues when I remove the shower head.

Could anyone shed any light on what this could be?

Thanks

 

[gas4you]

Possibly muck in the venturi?

What tune is it whistling and can it keep time?

 

[mdlyons]

What is the Venturi?

lol, it only whistles when the mrs is in the shower, not when I am using it.

 

[gas4you]

Am I correct in assuming it is a Trevi Boost? Then internal waterworks that hot water is sucked through.