Had the pump replaced on my boiler which is a year old and there is now an irritating low level hum coming from one of the pipes. Boiler is in an upstairs bedroom and pipes run down to living room below and are behind a hardboard partition. I assume the answer will be get the bloke back in but is there anything obvious that’s safe for me to check first? There is no air in the radiators and the humming occurs as soon as the heating or hot water is turned on. When I have checked upstairs where the boiler is the noise isn’t so bad and doesn’t appear to come from the boiler or pump itself.
Boiler pump replaced now got a humming pipe
- Thread starter Philip624
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Might be able to suggest a more suitable setting if its not the pump itself thats failing, can you post the pump make/model/mode/setting, if the pump has indicating LEDs post a photo of the pump (and LEDs) while its running.
How many rads??, any UFH.
How many rads??, any UFH.
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What are the black rubber things with what looks like a hose clip? Connectors of some sort? Look dodgy to me
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Adjust the pump setting to I, there are 3 settings (I,II and III) with I bring the lowest. Check that the radiators still get hot after changing the setting.
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Look like they are securing the pipework to the wall.
It should have 4 settings like shown (control panel), see if one of these is illuminated, if not, just press the setting button very briefly, say 1 sec, that should show the setting.
Possibly, but I wonder why the changes from painted to bare pipe
Yes, they look suspiciously like bodged pipe joiners to connect the obviously new copper to the older painted pipes. I suspect the new pipes each side of the new pump are 22mm and the older painted pipes are 3/4in. The plumber probably didn't have any 3/4in adapter olives that can be used in 22mm compression fittings to make them compatible with older 3/4in pipe, so resorted to these rubber connectors instead.
Still, I don't think that will be the cause of the humming sound, but using a few more pipe clips or mounts around the pump may help. I would experiment with holding the pipes and pushing gently in different directions with the pump running to see if the humming is decreased or goes away.
Those are anti vibration rubber clips. https://www.toolstation.com/anti-vibration-circulating-pump-bracket/p43896 is one example and https://www.toolstation.com/anti-vibration-circulating-pump-bracket/p37290 another.
They do not join the pipes.
Quite possible that they are not working as well if reused? and perhaps the pump control/connection is now touching the wall so transmitting vibration into the building more?
But first step is to check/adjust the speed setting switch as Mister Banks suggested. It only has three speeds, as I read the label in the photo: I II and III.
They do not join the pipes.
Quite possible that they are not working as well if reused? and perhaps the pump control/connection is now touching the wall so transmitting vibration into the building more?
But first step is to check/adjust the speed setting switch as Mister Banks suggested. It only has three speeds, as I read the label in the photo: I II and III.
Brilliant that has solved it thanks a lot!
What setting was it on Philip?, if its now on setting 1 then IMO it will be nothing short of a miracle if a pump head of 1M (if I am looking at the correct info) will satisfy a 7 rad requirement, hope I'm wrong. Speed 2, yes, at 3M should be fine, don't know if your pump has a ECO setting.
Edit, think you should be ok as looking at yours again then speed 1 is 3M.
Edit, think you should be ok as looking at yours again then speed 1 is 3M.
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