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Worcester boiler pressure at 0.

Discussion in 'Plumbing and Central Heating' started by kathydon, 3 May 2021.

  1. kathydon

    kathydon

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    Hi my Worcester bosch pressure is at zero and I followed the instructions to raise the pressure, but nothing happens and the pressure stays at zero. What else can I do?
     
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  3. JohnD

    JohnD

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    either you have a really bad leak, or you have made a mistake. Please post photos (by copy and paste into your reply, or use the "upload a file" button) showing all the valves, pipes and hoses under your boiler.
     
  4. kathydon

    kathydon

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    Hi, thanks for answering, I've followed the instructions straight from the videos, I've uploaded the photos below any advice would be appreciated.
     

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  5. terryplumb

    terryplumb

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    You may not be doing it correctly. The white hexagonal nut needs to be loosened off ,and the key needs to be in the correct " open" position,you should then hear water flowing into the boiler ,will need to run for a while before 1 bar pressure is reached.
     
  6. kathydon

    kathydon

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    Thanks Terryplumb for answering, I put the key in the open position and the white nut is really tight, I have loosened the nut until its almost out and there is nothing, no water running, nothing. I have switched the electrics off as stated in the videos I've watched. I don't know what to do with it.
     
  7. terryplumb

    terryplumb

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    With the nut fully loosened ,try moving the key slowly to a different position ,you may think it's in the correct open position ,but it may not be. In your pic it's shown locked "off"
     
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  9. kathydon

    kathydon

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    Thanks. The key can only go to the locked or unlocked position, if I move it to the locked position then water comes out of both the white nut and key position.
     
  10. terryplumb

    terryplumb

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    Sounds like the filling loop is duff. You can have an external filling loop fitted ,cheaper than replacing the integral one. Depending on your plumbing skills ,and the availability of a garden tap, you could, as a temporary measure ,connect a hose from it to a drain off point to top up. Is the boiler still operating ok ,some will ,even though pressure gauge is on zero.
     
  11. kathydon

    kathydon

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    Thanks again. My hot water is fine, but my heating is dead. Will I get a better outcome with an external filling loop? I've seen video's so should be able to do it.
     
  12. terryplumb

    terryplumb

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    A lot cheaper ,easy to fit ,and doesn't require working on the boiler itself. Probably more reliable too ,long term.
     
  13. kathydon

    kathydon

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    Thank you, ill try screwfix for one.
     
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