Loud whistling when running the shower

[Pin Pin Poola]

Hi,

Our heating system has started whistling very loudly when the shower is being used.

If I run a cold tap, the whistle stops immediately.

If I run a hot tap, the pitch of the whistle changes.

The noise is not coming from the boiler (Ideal Icos) which is in the kitchen, it is coming from the 'tank' (A-Class BoilerMate OV) in the upstairs airing cupboard.

The heating system was installed 12 years ago ('new' build), but the shower which is a bar-type, was only installed about year ago (replacing a previous bar-type shower)

It only seems to happen first thing in the morning.

Any thoughts?

Thanks
Pin

 

[Harvest Fields]

Possibly the ball valve and float in the hot water tank in the loft?

 

[Pin Pin Poola]

Possibly the ball valve and float in the hot water tank in the loft?

Hi,

I don't have a tank in the roof/loft, but there is a small tank in the airing cupboard on top of the main tank. It looks pretty grim inside.

Some pics:

Thank you.
Pin

*edited pics*

 

[Harvest Fields]

Pictures do not work

 

[Pin Pin Poola]

Pictures do not work

Pics should be fixed. I deleted the originals as they had my GPS coordinates in the EXIF data. #schoolboyerror

 

[Burger]

It’s a thermal store unit, I’m not up in these, so maybe someone else?

https://hinchliffeheating.co.uk/wp-content/uploads/BoilerMate.pdf

 

[Burger]

Pics now work.

 

[Harvest Fields]

Does the sound come from inside the boilermate?

 

[Pin Pin Poola]

Does the sound come from inside the boilermate?

Yes, as far as I can tell.

 

[Harvest Fields]

Possible squeaky pump? They are quiet loud when running though.