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  1. W

    When central heating is on the overflow pipe leaks outside?

    In that case switch on htg & check if water is being discharged into f&e tank if so you have a serious problem as system may be blocked
  2. W

    When central heating is on the overflow pipe leaks outside?

    With no info i could only guess that you have a combi & the exp vessel needs pumping up with air
  3. W

    lost pressure in glowworm 30ci

    There is only a certain amount of air you can put in exp vessel which should be at around 1 bar.The reason you cant put in water is that the filling tap will have failed (very common) so you will either need to change filling valve or put in a remote filling loop between mains cold water & htg...
  4. W

    Sharesave or Share Incentive

    Why not do both with sips you can save up to £125/month which is tax free you get 1 free share for every 2 bought (up to 20/month) as you build up a pot of shares you will get the dividend every 6 months. With sharesave you opt to buy shares @ set price for either 3 or 5 years but it is not tax...
  5. W

    Bled radiators but still gurgling

    System may be drawing in air or pumping over due to poor design
  6. W

    Adding a radiator on microbore

    If you tee into an 8mm pipe make sure both rads are only small as they won't work properly
  7. W

    Vokera Linea 24 DHW Temperature Cycling during drawoff

    You will probably need to fit another plate heat & then flush system or that will also fail
  8. W

    Landis & Gyr controller

    More than likely the old clock is on an industry standard backplate so most new clock modules will just fit without any wiring. Undo 2 screws below clock module & take it to local part stockist to see if it will fit
  9. W

    Vokera Linea 24 DHW Temperature Cycling during drawoff

    Not blocked on mains water side of plate heat ex it's the htg side. To test run hot tap & watch temp display (i assume it is a linea 24) when blr flame goes out then immediately turn the filling valve from the 12:00 position to the 09:00 position which stops water flow. The display then reads...
  10. W

    Combi Boiler recommendation rqd

    big output vaillant if you have a decent mains pressure
  11. W

    no plt light- potterton netaheat elec 10/16 - safety concern

    It would be most unusual to be pcb if it is only 4 years old (in over 30 years i have never changed one). If you say it is sparking but not lighting pilot (not permanent pilot) i would be looking at blocked pilot injector or gas valve
  12. W

    Vokera 20/80 RS Flowmatic DHW Expansion Vessel Pressure

    Another possibility is the stuffing box washer is leaking which allows mains water to pass into htg circuit through 3 port valve (very common)
  13. W

    Glow worm heat exchanger leaking /design fault?

    The burner door seal needs changing from the silicon type to a graphite type only corgi territory i'm afraid
  14. W

    Alpha CB28 - hot water issue

    That switch is also very expensive for what it is
  15. W

    Need Heating/hot water

    What about lpg
  16. W

    Vokera Linea 24

    change plate heat exchanger
  17. W

    Urgent help needed - Swapping Room Thermostat

    red to a blue to b yellow to c
  18. W

    Another Myson Midas sfi problem

    I would put it in a skip
  19. W

    Potterton Suprima Continuous Orange LED

    Probably will be pump
  20. W

    Potterton Promax 33HE Plus

    My 1st choice is vaillant 2nd choice is worcester bosch then i don't have a 3rd choice
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