CH Working but not DHW

Discussion in 'Plumbing and Central Heating' started by gatesy0093, 7 Mar 2018.

  1. gatesy0093

    gatesy0093

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    Hi guys, First post so be kind!

    My boiler is a Worcester Greenstar 28i Junior.

    The problem is as the title says, Central Heating is fully working but come to turn the taps on and no hot water.

    With the CH off, the DHW starts of warmish and the goes ice cold.
    with CH on, DHW comes out hotter than warm but not enough to burn yourself.

    I've read that the most likely culprit is the Diverter Valve, so I'm just looking for some advice on how easy this is change. I'm not scared of some DIY, I've changed the pressure vessel before (It took all day and had to come of the wall) so I don't mind getting my hands dirty.

    Just hoping its an easy fix and some help would go a long way, Cheers guys!
     
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  3. CWHEATING

    CWHEATING

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    How ever competent you feel you are unless you are a qualified heating engineer or at least have previous experience working with engineers on gas appliances and even then I’d strongly recommend not working on your boiler. I’ve seen something’s in my time and would hate to hear someone had to come to harm from a silly mistake made. There is a saying I’m sure you’ve heard of “ a little knowledge can be dangerous” I can’t believe you actually removed your boiler from the wall at one point.
    There is a sticky on this forum from 2004 I believe it says Gas Safe say you can work on gas appliances yourself,in your home if you are deemed competent. I’m pretty sure this has been changed and no longer stands. Please take that in to mind andcthe safety of others.
     
  4. deemedcompetent= thought that meant gsr?
     
  5. CWHEATING

    CWHEATING

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    Yeah but it covers out of date gas tickets aswell. As long as your doing work in your own home and no one else’s.
     
  6. muggles

    muggles

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    Forum Rules state that we're not allowed to give advice on here which might lead to DIY gas work, which includes both work on the gas and also the flue system. On your particular boiler, removing the front cover disturbs the flue system by breaking the room seal, and the 26.9 checks must then be carried out before the boiler can be operated again.
     
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  7. CWHEATING

    CWHEATING

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    I’ll be honest I don’t even like telling customers to top up the pressure on their own boilers. It can cause all types of problems if done incorrectly.
     
  8. Wildcat1961

    Wildcat1961

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    What deems a heating engineer “qualified”?
    In other words how does one become qualified?
     
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  10. CWHEATING

    CWHEATING

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    Ha ha I see where your going with this. Ain’t biting.
     
  11. Wildcat1961

    Wildcat1961

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    Genuine question to be honest.
    Ok, what deems you a qualified heating engineer?
     
  12. CWHEATING

    CWHEATING

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    OK I’ll bite.
    What deems me a qualified engineer? What makes you think I’m qualified?
     
  13. Wildcat1961

    Wildcat1961

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    You portray yourself as a qualified heating engineer as well as a RGI?
    Are you?
    No malice intended just asking that’s all.
     
  14. CWHEATING

    CWHEATING

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    Just ACS TBH
     
  15. Wildcat1961

    Wildcat1961

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    Oh ok.;)
     
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