My Baxi 105e has started to make a low pitch humming sound when the heating or hot water is on. The sound is continuous and can be heard throughout the house. I dont think it is a Kettling noise as the noise is very low pitched.
Baxi 105e Humming sound
- Thread starter tuppa
- Start date
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I'll bet you will be buzzin' when you find the source. 
Use your 'listening stick' screwdriver to check out the gas valve as well while you are at it.
Use your 'listening stick' screwdriver to check out the gas valve as well while you are at it.
An update to the problem.
British Gas (service contract) came to look over the boiler with two of their TSM's. After a couple of hours they came up with accidental solution of restricting the cold pressure going into the bar mixer shower and the noise seemed to go away. In fact it is still their, mainly on the shower when it has been running for a while. They also changed the seals in the diverter valve ass'y to cure a leak.
The noise now only comes on with the DHW and mainly on the shower, we have changed the shower to a Triton bar mixer and no difference. Dropped the DHW temp on the guage on the boiler, still no difference.
Any ideas? I am thinking of paying for Baxi to come and look it over or even buy one of their Platinum boilers with the 5 year warranty.
British Gas (service contract) came to look over the boiler with two of their TSM's. After a couple of hours they came up with accidental solution of restricting the cold pressure going into the bar mixer shower and the noise seemed to go away. In fact it is still their, mainly on the shower when it has been running for a while. They also changed the seals in the diverter valve ass'y to cure a leak.
The noise now only comes on with the DHW and mainly on the shower, we have changed the shower to a Triton bar mixer and no difference. Dropped the DHW temp on the guage on the boiler, still no difference.
Any ideas? I am thinking of paying for Baxi to come and look it over or even buy one of their Platinum boilers with the 5 year warranty.
tuppa said:
Subject to terms and conditions ie installed 100% by the book and fully serviced each year and at the discretion of Baxi.
Another installer told me all this had been done and Baxi accepted the heat exchanger had failed (and agreed to swap out the boiler) but took so long to arrange the swapout the customer had no choice but to have another boiler installed from a different manufacturer - the 5 year warranty was worthless.
It could be that you need a shock arrestor fitting. For the cost involved its got to be worth a try. Once upon a time all combis had them as standard.
See page 12 of the MI's
See page 12 of the MI's
Just a bit more information, when the water turns off a sound can be heard for a couple of seconds,........... but this may be normal. I am just trying to get as much info to narrow it down, I have to then convince british gas as dont dare touch the boiler. I would be terrified of doing something wrong in it.
Gasguru said:
Why on earth swap a boiler instead of fix it?
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