Noisy Pipes

[Madrocks]

Hi, when the room reachs temp and themostat clicks off, the pipes become very noisy, not banging but as is if the system is constantly filling you can hear the water flowing through them. It stops when the thermostat clicks back on or i turn the temp up to make it come on.

We have a Glow Worm Space Saver MK II in the garage which was serviced approx a year ago and a pump which is approx 5 years old & 8 radiators which i have bled. I think its a gravity fed system, the hot water has to be on for CH to work, cold water tank in loft and cylinder in cupboard. The cylinder only has a bleed tap and i cant find any other motorised valves anywhere. The thermostat is in the living room.

Any help much appreciated.

 

[kevplumb]

sounds as if the boiler is kettling

 

[Madrocks]

Kettling, not sure what you mean?

 

[kevplumb]

the water in the boiler is doing just that localised boiling

this may help

 

[ChrisR]

[Ketting is supposed to be boiling under bits of scale deposits in the boiler.

Boiler Silencer liquids help too.

 

[kevplumb]

ahh it's you is it