Constant quiet ringing noise in all rooms

[Deleted member 294929]

it was some chicken we forgot about defrosting in the microwave. Kind of omnipresent but unable to pinpoint.

I don't suppose he could point at all after a turn in the Microwave.

 

[Oldgirl21]

@johnny2007 Either that or he's bypassed the meter!!

 

[HERTS P&D]

It's haunted! Get a preist in.

Andy

 

[johnny2007]

@johnny2007 Either that or he's bypassed the meter!!

 

[Oldgirl21]

It's haunted! Get a preist in.

Andy

No need, I have the resident Demon who protects me

 

[Oldgirl21]

Thanks everyone! Heating engineer confirmed small leak on central heating pipe under floorboards and the reason I could hear it in all rooms was the water was constantly circulating through the pipework. All repaired now.

 

[Burnerman]

Great that it’s sorted, but you said the noise was there with both the water and electrics turned off?
John

 

[Oldgirl21]

Great that it’s sorted, but you said the noise was there with both the water and electrics turned off?
John

It's an f&e system with tank in loft so the water would run until the tank emptied whether the water was on or not.

 

[Burnerman]

Agreed, but the expansion tank only holds around 4 gallons which would soon empty!
John

 

[Oldgirl21]

Agreed, but the expansion tank only holds around 4 gallons which would soon empty!
John

The water won't have been turned off long enough to empty four gallons. The large cold water tank would also keep filling it as it does the cylinder tank (gravity fed)? Noise has stopped so that must have been the cause.

 

[Burnerman]

The large tank (40 gallons maybe) supplies your copper cylinder in the airing cupboard or wherever. Obviously there’s no connection between that and the small expansion tank, and with the water turned off they both stop filling.
Anyhoo, peace is restored but you’ll need some inhibitor in the central heating circuit to prevent corrosion as it will be long gone now.
John

 

[Oldgirl21]

Thanks John, so how does the small tank fill with water?

 

[Mottie]

They both fill with water from the mains and have a ball valve in them to stop the water when they have reached the required level.

 

[Burnerman]

In a normal situation the water level in the expansion tank doesn’t change, which is why it often looks so grotty when you look in there.
Inhibitor in this circuit restricts the corrosion within the boiler and the steel radiators, and it’s very important to prevent rust forming.
A small (15mm) diameter pipe connects this tank to the heating circuit, and if you find it becomes difficult to bleed the radiators at any time it’s this pipe that blocks.
Just a bit of info!
John

 

[Oldgirl21]

In a normal situation the water level in the expansion tank doesn’t change, which is why it often looks so grotty when you look in there.
Inhibitor in this circuit restricts the corrosion within the boiler and the steel radiators, and it’s very important to prevent rust forming.
A small (15mm) diameter pipe connects this tank to the heating circuit, and if you find it becomes difficult to bleed the radiators at any time it’s this pipe that blocks.
Just a bit of info

Thank you.