Hi me again, i'm probably just worrying because it seems to be one thing after another but , i had a pilot light problem and following advise found here i had the thermocouple replaced which solved the problem, now i've got bumping and rattling what is ccausing this????? thanks janine
now What???
- Thread starter janine
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pump... great, which is the header tank and when you say check you mean check theres water in it?? 
The bumping and banging is lack of circulation.#
Either the pumps not working, the system is full of sludge, or there's no water innit.
Some details on the make and model of the boiler, and a few system details would help.
Either the pumps not working, the system is full of sludge, or there's no water innit.
Some details on the make and model of the boiler, and a few system details would help.
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Also if the thermostate on the boiler was up to full could this cause bumping and rattling??? thanks for your time janine
janinethe bolier is a glow worm fuelsaver mk11. you say its a circulation problem, when the thermocouple was changed a leak was found and a valve was tightened up to stop it. could that have any thing to do with it.?? thankyou janine
thankyou janineI'm not sure if it was moved but i'll look in to it. thanks again for your advice, v helpful janine
janineok, up to know i have not been witness to the bumping and rattling. now i have and this is what happens, after abt an hour the boiler casing began to rattle, the flame visible through the pilot window changes shape and colour, this last a matter of seconds and the boiler goes back to normal, everything seems to be functioning properly, hot water is being directed to the cistern and the thermostate is working fine. the hot water tap had just been running before it happened. do you think the rattling and flame changing is a problem. hope you can shed some light on this. if any light needs sheding on it. janine
janine
wee bumpity bump for janine
last bump from me!!!!!!!
the bolier is a glow worm fuelsaver mk11. you say its a circulation problem, when the thermocouple was changed a leak was found and a valve was tightened up to stop it. could that have any thing to do with it.??
You need to forget about the gas valve, I think.
You say the boiler is bumping and banging, that is circulation problems.
Have you checked the pump is working.
Did the valve that was leaking get turned back on.
to be honest its more of a rattle in the combustion chamber and the flame changes shape and colour, the leak has been left tightened up. still think its a circulation problem? it only does it for a minute. thanks for getting back to me.
It's an old boiler so it could just be some contracting and expanding of the metal inside the combustion chamber however it could be explosive ignition so if I were you I'd get it looked at properly.
It did sound initially like a circulating problem but if it were it would certainly last more than a minute and would eventually lead to the boiler shutting down due to overheating or the boiler stat being satisfied.
Could be nothing of consequence though but don't take a chance for the sake of a few bob.
Tony.
It did sound initially like a circulating problem but if it were it would certainly last more than a minute and would eventually lead to the boiler shutting down due to overheating or the boiler stat being satisfied.
Could be nothing of consequence though but don't take a chance for the sake of a few bob.
Tony.
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