knocking

Hey does anyone know why this raven heat has started knocking,not all the time but is knocking. I thought gas pressure but aint, then pump any ideas

Hi i have just purchased a new build property (a flat) and I think I have a few problems: There is no Thermostat in any of the rooms. Do I need one? I assume there should be one installed. I have bi-directional TRV's fitted to all rads, I thought you would need one rad without a TRV? The...

Hi, since yesterday I have been aware of a faint knocking noise on my mains inlet. The noise occurs every few minutes and varies in loudness then it will stop for anything up to an hour or so and then it will start again. This happened all through the night when everything is off. When I run the...

As per the subject line of this post, for the last two days there has been a very strange double knocking sound coming from one of the pipes in our flank wall (end of terrace), every twenty seconds or so. Aside from this driving us slowly insane, it's also quite concerning, so I wondered if...

Hi, how do you you knock the head off a hot water cylinder please, and when do use need to do it? Many Thanks Andy

Siemens RF rdh10 stat.Not knocking off?Call for heat at the stat fires the boiler,but when stat set at say 17degrees it doesnt knock off??

called to see boiler everything is working fine on hot water , but when on heating boilers flame is knocking on and off, would that be the thermistor ? thanks:D

The radiator in my bedroom knocks/bangs at where the pipe fits the valve at the bottom everytime it fires up. It only does this maybe 10 times in rapid succession and then stops....till it cools down and then does it again. Its the side opposite where the thermostat is...any suggestions what it...

I have just had a new condensing combi boiler fitted, retaining the existing radiators and most of the pipework. When the TRV's are in the approx mid point setting the upstairs ones just randomly start knocking, presumably as they are about to shut off. The knocking is easily stopped by just...

When we moved into our new house about a couple of years ago the hot water pipe knocked when you turned the tap about a quarter turn the pipe would start knocking then the more the tap was turned the less water would come out. I replaced the tap and everything has been working fine since then...

Hi, If anyone can help me with this problem it would be most appreciated. There seems to be something happening to our plumbing system. When you turn a tap off (either hot or cold), there is a loud knock throughout the pipes. This also happens when the shower is turned off and when the...

Hi All I have a problem with knocking pipes. When hot supply is shut at any tap there is a knocking sound from the pipes.The hot water is supplied by electric water heater. Any ideas????

Hi All I have a problem with knocking pipes. When hot supply is shut at any tap there is a knocking sound from the pipes.The hot water is supplied by electric water heater. Any ideas????

When the heating comes on/goes off, I have an awful noise coming through the pipes to the radiator predominately in the bedroom as if someone is tapping on them Any adeas as to how to stop this noise??:confused: