Boiler making weird noises

Discussion in 'Plumbing and Central Heating' started by khanm, 29 Nov 2021.

  1. khanm

    khanm

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    Hello All, I am wondering if you can please guide me here.

    I have a vaillant boiler and it makes weird noises when its starting. Its not all the time but mostly does once a day. I have attached the video.

    I usually turn off / on the boiler and the sound stops or
    I turn on hot water tap (kitchen or bathroom) and this sound stops.

    Any help will be appreciated.

    Thanks

    Video: https://streamable.com/n0cikr
     
  2. CBW

    CBW

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    That’s a flying insect trying to escape :LOL: joking aside, it should be a simple job for a gas safe registered engineer, as the case forms part of the combustion circuit.
     
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  4. khanm

    khanm

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    lol and thanks.
    Just wondering what work would that be so i can do estimate of costs.
    Regards
     
  5. CBW

    CBW

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    It needs the diverter valve replacing.
     
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