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  1. Y

    CH Pump Problem

    .
  2. Y

    CH Pump Problem

    I had 8 rads when moved in 2002 and all was fine but after ground floor extension became 12 rads had issues heating the rads in the extension, been balancing them and it's ok, kept same heat only boiler 18KW.
  3. Y

    CH Pump Problem

    Would an automatic bypass valve do a better job? it's suggested by @Johntheo5 in post #61 above.
  4. Y

    CH Pump Problem

    Yes I have kept the old, will dismantle may be in the weekend, will post photos. According the installer, implied it was dead, 240v was getting boiler kicking but nothing happening, will find out hopefully when dismantled.
  5. Y

    CH Pump Problem

    duh
  6. Y

    CH Pump Problem

    The installer told me I can have at any speed, I put it II for now as in pic.#
  7. Y

    CH Pump Problem

    SORTED!!! I called a local plumber today to replace the pump, I have already got the new Grandfus UPS3 15-60. He came turned heating on and straight away said it's the pump. Took him over 2 hours but stayed longer to see boiler firing , £100 very reasonable, couldn't do it myself. BUT After he...
  8. Y

    CH Pump Problem

    Not only that he turned the bypass valve fully on, luckily I was watching him and he didn't put where it was before; pls see my post #26 showing the photo of the bypass valve which is nearly shut.
  9. Y

    CH Pump Problem

    There was a purpose for this post: I booked a gas safe engineer yesterday morning; he said I need new boiler, new pump and power flush; total £3800 and spent time trying to convince me. I asked him to test the pump but was ignored.
  10. Y

    CH Pump Problem

    There is no other parts which can be faulty. The boiler fires only for 30 sec then stops for 30mins or so, the feed pipe from the boiler get very hot and return is cold, then the pump get very hot for no good reason. What else good it be, boiler?
  11. Y

    CH Pump Problem

    Yes I did few turns clockwise until stopped then anti clockwise until stopped.
  12. Y

    CH Pump Problem

    I turned both valves clock wise and anti clock wise with no issue, does this confirm valves are in working order?
  13. Y

    CH Pump Problem

    TBH I don't have the confidence to replace the pump, haven't tried if valves are working/closing or not, will hire someone, just called a local plumber he quoted £350 labour only; laughable. I will make more calls tomorrow.
  14. Y

    CH Pump Problem

    :LOL:
  15. Y

    CH Pump Problem

    I haven't done anything since; few questions: 1. With hot water or central heating selected, would the pump turn if boiler not firing? IE: does the pump turn only when boiler is firing? 2. Can I test the operation of the pump without taking it apart? ie: by taking the middle silver screw and see...
  16. Y

    CH Pump Problem

    The tank was emptied from same rad drain point as before, the remaining water removed and cleaned thoroughly; there were metal bits at the bottom. Is Sentinel x100 good enough?
  17. Y

    CH Pump Problem

    The tank was full, by the dry line. The flow rate of drained water as per photo above.
  18. Y

    CH Pump Problem

    The tank was full, by the dry line. The flow rate of drained water as per photo above.
  19. Y

    CH Pump Problem

    Update: I turned off the cold feed to the header F&E tank, drain from ground floor drain valve for good 5 mins, went to the loft, water level in header tank down to third; pls see pic below. Verdict?
  20. Y

    CH Pump Problem

    magnets sticking to more than one pipe, 15mm and 22m pipes, how to remove crud, manual flush?
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