Loud humming sound fron hot water cylinder and supply pipe

[Dom38]

HI, WAS WOUNDERING IF ANY ONE COULD HELP ME , I HAVE A LOUD HIGH PITCHED SOUND COMING FROM MY HOT WATER SUPPLY PIPE FROM THE HOT WATER CYLINDER , IT IS NOT CONSTANT ! WHEN YOU TOUCH THE PIPE YOU CAN FEEL IT VIBRATE . THIS SOUND IS HAPPENING WHEN THE TAPS ARE OF AND THE BOILER IS NOT FIRED UP ALOUGTH THE CYLINDER AND PIPES ARE HOT .:teeth_smile:

 

[lbp plg & htg]

Unvented?

 

[Dom38]

Hi sorry should have stated that it was vented

 

[lbp plg & htg]

Had numerous occasions where this has happened in the past Dom38.

You say the noise only happens when NOTHING is being used? Is the immersion on?

 

[Rickster123]

:iagree: Check the immersion switch hasn't been accidentally switched on.

 

[Dom38]

hi thanks to you all will check the immersion is not swiched on ! but why would this cause a problem the thermostat should cut the heat from the immersion ! thanks again :28:

 

[zeebeedee]

:mad2:

 

[Dom38]

yep ! but my head is sore! i am of to the pub hope there pumps are working !

 

[PlumbBobBob]

the cylinder stat doesn't control the immersion, it is on a separate control circuit and independantly powered

 

[Dom38]

Hello well thanks for all your advice but I am afraid to say the problem is still occurring the immersion has beem totally isolated . does any one out there have any Outher ideas ?:17: