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Thread: Heating On When Not Required?

  1. #1
    Automated Home Lurker
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    Default Heating On When Not Required?

    I am a complete ignoramus with all things DIY so I apologise in advance.

    My problem - Combi system in my new home (system about 4 years old I believe)heats radiators whether I select hot water only or hot water & heating regardless?

    I have had an electrician check the boilers wiring and that is OK so not sure where to go next (spoke to a mate of a mate who mentioned something about bypasses?)

    Wanted to check it wasn't anything obvious before forking out on a plumber.

    Any advice greatly appreciated. :roll:

  2. #2
    Automated Home Lurker
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    Default Re: Heating On When Not Required?

    Forget to say model is Baxi Combi 80 Eco.

  3. #3
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    Default Re: Heating On When Not Required?

    Just got the following reply from another forum does anyone concur?

    "Sounds like your diverter valve has failed. You need a Corgi registered gas engineer. Shouldn't be too expensive".

  4. #4
    Moderator sunbeam's Avatar
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    Default Re: Heating On When Not Required?

    it's definitely a job for an engineer, diverter valve/flow switch,

    in the mean time you could turn off your radiators individually(leaving one turned on)

  5. #5
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    Default Re: Heating On When Not Required?

    Thanks for the advice just got back from a short break where I have received the following from another forum:

    It's your dhw microswitch that's knackered, common problem on the eco's. The new one comes with a wiring harness attached so it's better to get a corgi repair engineer to do. The part number is 248207.
    __________________
    Have you tried bleeding the radiators or changing the thermocouple first?

    Followed your advice and switched rads off individually at moment, going to bite the bullet and get an engineer on payday lol.

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