baxi combi instant 105e - boiler banging like a kettle

[butcher08]

hi there , im new to the site an if any 1 has advice it would be geatly apperciated.

Right ive added an external expansion vessel as advised by baxi and the auto air vent. now it appears that the old vessel needs to be removed as its leaking by the valve, is there anything i need to do to after this. like use a cap or re-pipe it to some wher ????

thats only the satrt lol ... neway also with the temp's of the DHW and the CH being in the middle (6 o'clock possition) when in DHW mode the boiler fires up as normal then after ive pulled the pin out the broken (will be replaced) DHW section to the divertor valve the boiler fires up. but ... then after about 2 - 3 mins the boiler then starts to sound like a kettle ???? any ideas ???? ??

also ... the boiler dose the same in CH mode boiling like a kettle.

i know i need to change the DHW part of the divertor valve but is that it or do i need to change more biits, i dont know ???

thanks

 

[twgas]

you cant just disconnect the exp. ves. on your boiler - if it leaks it has to be replaced - pig of a job, boiler off the wall (probably).
as for the diverter,
if the kettling is excessive it may be due to a lack of water, or circulation.
with all your probs my advice is to get a reliable pro in to sort boiler, or relace it!

 

[butcher08]

cheers mick

i know wat u mean but ive kinda started an feel like a goon havin to get some1 else in to tidy up with wat's left to fix, when you say theres a circulation prob could u be more specific wer it may be or wat it is !!
this boiler is been a nightmare job im neva touching these agen

 

[gavinda]

thats why we train