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2 Oct 2015 at 8:48 PM
9 Sep 2005
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Heating but hate plumbing

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from London

Gasguru was last seen:
2 Oct 2015 at 8:48 PM
    1. Richardaccy
      apologies fro a long explanation but it seems a little complex I'm afraid its patched in reverse order
    2. Richardaccy
      We're both concerned. me particularly because it's my money I'm spending and he's concerned too because it bothers him that he's not entirely sure, but is working as am I on a balance of probabilities.
      The boiler worked fine last time it was in use when the house was let out about 20 months ago (September 2013)
      Can you help at all please?
    3. Richardaccy
      Although I'm a plumber and Electrician I'm not gas safe registered nowadays and so I called in and paid Mike Webb who is for an opinion. He's no real experience of Ariston. but he examined the boiler meticulously .
      I had explained my findings to him in detail and he's gone through exactly the procedures i have and come to the conclusion , like me that it must surely be the three way valve that's faulty.
    4. Richardaccy
      (it's a differential pressure operated diaphragm which pushes a magnet encased ion a plastic plunger to operate the leaf switch)
      just isn't moving to make the circuit. Both the entire unit and small diaphragm have been replaced there were signs of some sort of historic seepage on the lower case of the boiler directly beneath this.
    5. Richardaccy
      It then responds appropriately to either DHW or the heating thermostat and the radiators don't heat up simply when just drawing hot water.
      We've tried letting it run for a while in case something is blocked but the main flow switch
    6. Richardaccy
      Hello, can you help please?

      I'm an electrician and plumber.

      I've got an Ariston A23/27MFi which will not light.

      The Pump and main flow switch have been replaced at the suggestion of Ariston. Neither are actually faulty so it's no better.
      However if one pulls the plug off the leaf switch( main flow switch) and bridges the plug the boiler fires and runs.
    7. vansbest
      Hi, thanks for your response re my greenstar junior 24i problem and suggested I gas rate the boiler. couldn't find anything in FAQ can you advise please on the best way to do this. Thanks
    8. Gasguru
      Not over your way
    9. JonCa
      Many thanks, any recommendations around Sidcup area as I gather your localish.
    10. JonCa
      Hi, Suggested that I could approach you re large domestic installation in Sidcup. Replace boiler 45kW ish plus possible control upgrades. Jon
    11. billiamian
    12. Gasguru
      Goggle vaillantservice.co.uk think he covers Essex
    13. Stylesnj
      Can you help with a VWC-sine 18T3WF H boiler that wont fire up. Had a engineer come over but his recomendation was to replace it! He reckons the gas dirverter valve needs replacing then maybe a curicit board or something but then said might as well get a new boiler! Would rather spend abit of money getting this one working! Do you know any Engineers in essex that could support this old girl? Thanks
    14. expressplumber
      hi gasguru can you send me the info you have on gas-elec franchise as i was thinking to take on this franchise i was doing some research thanxx
    15. pdcabb
      GG could you please send me a copy of the Vaillant 242 manual. I've just changed the DHW Heat exchanger for the new type, put a new Diverter on as that was passing. still having hot water probs(intermittent) looking at putting a new servo assy on next with diff diapragm. But need to know if my model is the hybrid and needs the link taking out. Thanks a lot.
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    Heating but hate plumbing
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