Worcester 24cdi no hot water

Discussion in 'Plumbers' Talk' started by macca31, May 13, 2018.

  1. macca31

    macca31 New Member

    So today I have no hot water the heating side is fine. I have a Worcester 24cdi combi.
    So after a bit of advice that it’s probably the diaphragm on the diverter valve I set about replacing it. 8 hrs later and what a b***h of a job that was! Anyway no leaks so I power up and still no hot water!
    So starting to think it could be the micro switch on the diverter valve. Should I heat it click if it’s ok??
    Any help appreciated
     
  2. Dave does Gas

    Dave does Gas Well-Known Member

    If you did it yourself did you put the diaphram in the right way round, common error
     
  3. macca31

    macca31 New Member

    Yes. I replicated the way the old one was in.
     
  4. Dave does Gas

    Dave does Gas Well-Known Member

    is this the old Cdi with the grey facia or is it the Greenstar version
     
  5. macca31

    macca31 New Member

    I think it’s the old cdi as it does have a green facia
     
  6. I must be sad

    I must be sad New Member

    Your right! I hate doing them in the 24 it’s a right ****

    It likely be the flat plate blocked, I normally do both cos there so **** to get into
     
  7. I must be sad

    I must be sad New Member

    Try talking the filters out of the taps if it’s a **** flow they won’t fire
     
  8. Boilerdoktor

    Boilerdoktor New Member

    When you turn a hot tap on , do you get a red demand light ?
     
  9. macca31

    macca31 New Member

    Problem solved! I noticed,when looking at the diverter valve diaphragm pin from underneath that the black plastic disc was missing from it therefore it couldn’t operate the switch. After a quick look around I found it wedged between the floor boards under the boiler. Reattached it and now hot water!
    Thanks for all your help. Really appreciated.
     

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