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Worcester Bosch Greenstar 30CDI No central heating

Discussion in 'Plumbing and Central Heating' started by minimunchie, 8 Nov 2014.

  1. minimunchie

    minimunchie

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    Location:
    Lincolnshire
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    Hi hope someone may be able to help.
    Have Greenstar 30CDi boiler hot water functioning fine but on firing up central heating it does not flame up at all ( sorry if thats a poor description.)
    The controller for the unit is hard wired and can override the room thermostat controller so the fault is not comms to the stat.
    I have no fault codes listed on display so any guidance would be a great help as it would stop a cold weekend. I will call an engineer monday but if i could fix it in the meantime it would be nice .
    Have check condensate pipe and its not frozen or blocked.
    There is no fan activation on start up of C/H although it works when hot water is fired up .
    Thanks in advance.
    Andy
     
  2. picasso

    picasso

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    Controllers (programmer?) Can't normally bypass the room stat , do you have a wireless stat ?
     
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  4. minimunchie

    minimunchie

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    Location:
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    Thanks for quick response .
    System has a Drayton Digistat +2 programmable room stat.
    Wired to the system is a dual channel Dual Channel Drayton Lifestyle LP241 programmer which has a function to switch independently both C/H and Hot water.
    It is this programmer I have used to fire up system where I see C/H will not fire although water heating does.
    Hope this helps explain a little better sorry if it doesn't.
     
  5. minimunchie

    minimunchie

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    Location:
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    Hi
    Just a quick note to say fault was with diverter valve after checking all feeds were being sent when C/H and hot water were being called for the valve was not switching . Replaced valve all working correctly. Thanks piccasso you just made me dig a little deeper and think more methodically now have warm house and happy wife !!!
     
  6. DIYnot Local

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