DIY Doctor

Baxi Duotec Combi 24HE Boiler Loud High Pitched Humming and Whining Noise

Postby jonbbb » Mon Nov 30, 2015 9:37 am

Hello
I have an 8yo old baxi duotec combi 24he boiler.
When the gas central heating is running, it makes a constant loud high pitched humming/whinning noise.
The noise only quietens for about 5 seconds, each time the boiler reignites to heat the radiator water. Before then returning to the same level.


I am in the room above the boiler, the noise is quite loud and its persistence gives me ringing ears.
[see the link to hear the noise, recorded upstairs. the recording does not capture how loud the note is, only its tone ].
https://drive.google.com/file/d/0B2It1x ... sp=sharing


Further info,
If the central heating is off, but the hot water tap is turned on. The boiler makes the same sound but at a much quieter level.

--
My questions:
1. What is the noise likely to be coming from in the boiler? [or where has similar noise come from in other related boilers]
2. And when I call out the baxi engineer again, to attempt to identify the noise source. What are the likely parts, where they should first start their fault finding?


Thanks
Jon
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Postby Johnny77 » Wed Oct 14, 2020 3:38 pm

Hi i have seen your post on the noisy baxi boiler.
I have exactly the same issue the boiler is a baxi plantinum and was fine up until recently a high pitched humming droning noise started and wont stop ..Could you please tell me how you resolved the issue what was the fault and what price roughly .
Thanks in advance
John
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