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Filling/pressure issue - Bosch Worcester CDI 28?

Discussion in 'Plumbing and Central Heating' started by Ecob, 25 Feb 2011.

  1. Ecob

    Ecob

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    I have just seen that the pressure gauge is down at 0 and have attempted to fill it up in the correct recommended manner, three times. When the grey knob is turned you hear the water flow for about 3 seconds then silence with no movement in the pressure gauge.

    The boiler has been running on constant 24 hrs a day at 16 degrees c since October. It still is firing and heat is still coming from the rads, but no movement on the pressure gauge even if I increase the temp for five minutes.

    Is there a filling fault?
    &/or
    Does the pressure gauge need replacing?

    Any other suggestions?
    :rolleyes:
     
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  3. bobthebender

    bobthebender

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    Is there not a key as well as the grey knob with that model ?
     
  4. Ecob

    Ecob

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    Cheers for a quick response.

    Yes its is the old large white key model that has to be in place first.
     
  5. craig51

    craig51

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    from memory this boiler has two knobs next to the white key, one a grey white one, and one a black one. Is it not the balck one you turn once you have engaged the key?
     
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  7. nickso

    nickso

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    nope, black knob does nowt.

    gauge or the tube to it is likely to be faulty if the boiler runs ok.
     
  8. craig51

    craig51

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    Out of interest, what is the black one for??
     
  9. nickso

    nickso

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    no idea, never seems to do anything and i haven't felt the need to investigate further.
     
  10. bengasman

    bengasman

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    Time to get a RGI in.
     
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