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  1. R

    Baxi 105he instant external expansion vessel help please

    thanks for that, yes the EV is slowly depressurizing, I have changed the Schroeder and moved it on a valve extender out of the heat zone. The sec heat ex was holed, now changed. Just cant keep it pressurized. I think it perished although it doesn't let water past but does spit. Thanks anyway...
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    Baxi 105he instant external expansion vessel help please

    Gents, I have a Baxi 105he instant, I want to fit an external EV on the return flow. I intend to use the 22MM flushing connection to connect it. Questions. Do i have to use the RV that comes with the external EV or can I still rely on the boiler RV? Can I use a braided flexi to...
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    105 he instant Hot water not up to scratch - advice please

    Gents, I am so greatful for previous advice on my boiler. I recently posted problems with my 105 he instant (diverter v/v change) which cured that particular problem. However, i think now i have a DHW heat ex problem? Hot water is hot instantly but i have to throttle the flow to keep some...
  4. R

    105 he diverter change advice please.

    thanks for the advice diverter changed, cheers.
  5. R

    105 he diverter change advice please.

    Gents some questions. Does the left hand side of the boiler casing need to come off? Do the rubber heat ex seals need to be changed? Are the sealing washers fibre or rubber? I am preparing to change one, any advice welcome. Thanks Paul.
  6. R

    Baxi 105 he diverter problem?

    Gents, The diverter has given up totally now (No DHW) the time has come to change it. I can see its akward, is there anything in particular i should be aware of? (seals etc) What actually happens to the guts of the diverter, when they fail? Cheers Paul.
  7. R

    Baxi 105 he diverter problem?

    Took front off the boiler to suss out the job, thought i would try it on pre-heat to see what happened. Its working fine, cant get it to replicate the fault, diverter seems to be fine and can be heard changing over (well the motor). Would you wait for it to become a hard fault again? Could it be...
  8. R

    Baxi 105 he diverter problem?

    Hi guys I wonder if anyone can help me. I have a Baxi 105 he instant boiler. Today I came home to find the CH on, but there was No demand and not selected to run at that time (timer). The boiler was firing the instant hot water but heating the rads. Hot water has been iffy for a couple of...
  9. R

    Schrader v/v core on a baxi 105he

    Thanks will do it that way.
  10. R

    Schrader v/v core on a baxi 105he

    I think i may have done it wrong, i shut away the system from boiler and pumped it up to 1 bar using boiler pressure guage. Should i isolate system from the boiler, drain the boiler, pump vessel up and pressure check it with a tyre press guage? cheers
  11. R

    Schrader v/v core on a baxi 105he

    Done, thanks for giving me the confidence to "give it a BIT", the seal rubber had hardened stopped making a good seal. New core fitted and repressurised expansion vessel, boiler pressure now seems ok.. .8 to 2.5bar, is this normal? cheers.
  12. R

    Schrader v/v core on a baxi 105he

    Thanks guys, gonna try next weekend now, will let you know.
  13. R

    Schrader v/v core on a baxi 105he

    Thanks for that, It is unusually tight, or maybe im being to gentle with it, has anyone come across a tight schraeder core? Im a bit loathe to "give it some"
  14. R

    Schrader v/v core on a baxi 105he

    My expansion vessel schrader v/v is leaking air. I have tried to change the core but it is tight after 1/2 a turn and feels like it doesnt want to come out. Are they meant to be changed, any advice welcome thanks.
  15. R

    Baxi 105 HE pre heat function noisey/gurgling

    Thanks guys, now repressurized exp vessel and quiet as mouse even on preheat, cheers.
  16. R

    Baxi 105 HE pre heat function noisey/gurgling

    Thanks for that, I think maybe the expansion vessel needs charging/Pressure guage fault. Pressure goes from .5 cold to over 3 bars when heating, there is no rv lift or discharge, the boiler appears to be working as it should. Or is this an indication that there is no room for expansion? and...
  17. R

    Baxi 105 HE pre heat function noisey/gurgling

    Please do tell me guys if you think it will help, cheers. That would make sense as its only on preheat that its noisey.
  18. R

    Baxi 105 HE pre heat function noisey/gurgling

    Hi to all you experts out there, im looking for advice.. I have a Baxi 105 HE about 2 years old, it is noisy/gurgling only in pre heat mode. Can i bleed that circuit? It used to be quiet apart from hearing boiler kick in, possibly got air boiler in when i cleaned magnetic filter? though fairly...
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