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Discuss Air Air Air changed pump bled system?? in the Central Heating Forum area at UKPlumbersForums.co.uk.

  1. Olga

    Olga New Member

    Few weeks back I awoke to no hot water, I have a baxi 24 HE on an open system, boiler had tripped so reset next day same thing few days later I had a look and realised the pump had stopped, so bought a new pump, changed it and up and running but the system sounds like it is full of air wooshing around, banging and tripping the boiler constantly, sometimes It might last for 2 days. I have checked the F&E tank and you can see the water coming in as it expands but it is just luke warm not hot, i have a drip from an overflow but both tanks levels look OK, bleeding highest rads everyday to clear air. I am now very confusedto the cause, any suggestions?
     
  2. jtsplumbing

    jtsplumbing Plumber GSR

    Hi Olga, maybe something as simple has the pump is pumping the wrong way, look on side of pump you will see a arrow showing direction of flow.
     
    • Agree Agree x 1
  3. king of pipes

    king of pipes Trusted Plumber GSR Top Contributor!!

    The pump is back to front and pumping the wrong way ? That would be your first thing to check . kop
     
    • Agree Agree x 1
  4. king of pipes

    king of pipes Trusted Plumber GSR Top Contributor!!

    Spooky posted exactly the same time Jt
     
  5. jtsplumbing

    jtsplumbing Plumber GSR

    OOOOOOOOOOOOO !
     
    • Funny Funny x 1
  6. Olga

    Olga New Member

    Dont think so, it was a grundfos alpha just a like for like swop out, only goes one way as far as i know, after reading a little it may be pointing towards hot tank coil perforated maybe??
     
  7. jtsplumbing

    jtsplumbing Plumber GSR

    Yes only pumps in one direction ! but have you fitted it facing the right way ? that is why the pump has an arrow on it < >
     
  8. Olga

    Olga New Member

    these pumps have a power plug underneath and an electronic switch unlike the old fashioned grundfos pumps, hard to get wrong.
     
  9. Stigster

    Stigster Plumber

    The thing is the head of the pump is reversible depending upon which direction you want it to pump. The important bit is that the arrow on the pump body is pointing the correct way.
     
    • Agree Agree x 3
  10. Stigster

    Stigster Plumber

    • Like Like x 1
  11. jtsplumbing

    jtsplumbing Plumber GSR

    Sorry Olga, are you a Plumber Or a DIY person ?
     
  12. king of pipes

    king of pipes Trusted Plumber GSR Top Contributor!!

    Olga post a picture of the pump we can tell you if its correct ? Cheers kop
     
    • Like Like x 2
  13. Olga

    Olga New Member

    A friend recommended Fernox cleaner, worked a treat silenced in minutes, will leave it in for a day or two and then flush, thanks for the help everyone..
     
  14. Olga

    Olga New Member

    For peace of mind can somebody confirm the pump orientation please, got me worried.
    upload_2017-12-10_11-32-29.png
     
  15. Olga

    Olga New Member

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