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  1. K

    Leak on Unvented Cylinder / Central Heating - A Puzzling Situation

    I wonder if a tiny split in the cylinder opens up enough for water to seep through when its contents are hot/warm? Sounds like it could be a leaking cylinder connection wheere the heating pipes enter it, hence loss of pressure in heating system. Could be tricky to find if the connection is...
  2. K

    2port zone valve wiring connections?

    It doesn't really matter which way they go, what happens is that as the valve opens, a microswitch is closed which connects grey and orange together.
  3. K

    Loud noise from 3 port valve

    I replaced a zone valve today that I fitted only 2yrs ago. Appalling, motor had seized.
  4. K

    Ideal logic water leak

    This surely suggests blocked trap or condi pipe?
  5. K

    Problems sealing compression fittings.

    We are not allowed to use brass olives on LPG (gas) pipework, that about sums them up.
  6. K

    Problems sealing compression fittings.

    I always use copper olives, brass go in the scrap bin, as said above, if you get a weep, undo nut and wrap a couple of turns of PTFE around olive, never fails.
  7. K

    Baxi 105he water pressure problem

    This suggests your expansion vessel needs recharging, I believe you will find how to on the FAQs on this site.
  8. K

    Time for a new boiler. Free boiler Facebook ads??

    That is repairable, very cheaply.
  9. K

    Advice? -Ferroli 701 heating turning off/on?

    Trusty and Ferroli in the same sentence?
  10. K

    Smell around boiler only when off

    Is it possible that the condensate pipe (which may be teed into a drain) is allowing odours into the room, which may smell like gas? Eg, there may be an air gap installed on the condi pipework.
  11. K

    Remeha Boiler Not Firing Up

    I just had a quick look thrtough the book online and couldn't see a pressure sensor. I would have thought there is one, something is telling the PCB there's not enough pressure? They are usually easy to spot, and easy to bridge out just for test purposes.
  12. K

    Remeha Boiler Not Firing Up

    I rareley come across these boilers, but logic would dictate that the boiler thinks it has no pressure, so I would be looking at the pressure sensor.
  13. K

    Swapped radiator now boiler won’t fire up

    As I suggested some time ago;)
  14. K

    Loud vibrating noise when using tap, and also randomly?

    Knackered tap, crappy modern ceramic valve, see loads of them. If you can accurately ID the tap, just get a repalcement cartridge, if not, you'll have to change the tap.
  15. K

    Swapped radiator now boiler won’t fire up

    If you've drained the system, you'll need the air from the heat exchanger.
  16. K

    Hive overheating hot water.

    Are you sure the immersion hasn't been left on? Does the boiler and pump switch off if you turn the cyl stat down with the boiler running?
  17. K

    Central heating installation HELP!

    Looks ok to me, but choose one rad to act as a bypass by fitting lockshield valves to both ends, and leave them open, this is usually the rasd nearest room stat.
  18. K

    Worcester Greenstar 24i problems

    The blue light tells you that you have power to the boiler, unless it is flashing, which indicates a fault. My first port of call would be to see if the boiler actally has a demand for heat from the stat. If HW is working, then that's quite likely the problem
  19. K

    1 cm thick limescale in toilet

    It would be far easier just to change the pan.
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