Soggy_weetabix said:Listen to the experts on here!
AAV needs replacing. Wax capsule needs repairing / replacing by your 'bod'
The AAV is on the heating side of your combi.
If you dont underatand then lie back and trust us!
David
Im just trying to understand how it works. Im an electronic engineer so Im fine with the electrics but not so good at plumbing.
Thanks for you help
Ian