Ariston MicroGenus 23 MFFI Hot Water query

Discussion in 'Plumbing and Central Heating' started by farenheit, 9 Dec 2018.

  1. farenheit

    farenheit

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    Hi all
    I have the above system, I know (old and not the best) however it has served me well, considering it was already fitted in the property when I moved in.
    Earlier this year I had the main and secondary heat exchangers replaced by British Gas (long story - they didn’t need changing but as they were BG they insisted, however back then the problem still persisted so I didn’t get charged for it; it was a faulty expansion vessel in the end!)
    Anyhow I currently have a problem where the hot water downstairs or upstairs is tepid even when the dial is cranked up to max.
    Heating works fine.
    I have narrowed it down to the 3-way valve (can hear radiators ticking when water is drawn), however I have a query.
    Do I need to drain the system down to remove it? This is so I have inhibiter at hand (added 2 bottles of Fernox F1 in October so will be gutted if I have to)
    Also, does the lead on it come off easily? Do I just pull it off or is there a technique to it?
    That’s it really.
    Would appreciate the guidance as the lack of “hot” water is making for a quick bath at the moment
     
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  3. ianmcd

    ianmcd

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    check you cylinder stat first before you change the three port valve
     
  4. farenheit

    farenheit

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    Which one is this please?
    Do you have a link so I can read into it?
    It’s not the temperature probe is it?
     
  5. Gasguru

    Gasguru

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    It's a combi boiler. Given the questions, replacing a diverter is likely to be beyond you...call someone in.
     
  6. farenheit

    farenheit

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    Anyone in the brummy area fancy doing it
     
  7. ianmcd

    ianmcd

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    sorry read this post wrong when you said three way valve I thought you had a system boiler, my bad
     
  8. DIYnot Local

    DIYnot Local

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    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

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