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Hi All, A quick and hopefully simple question: I have recently had to drain down my combi boiler system to re-pressurise my expansion vessel - all done fine now! Of course, now I have refilled with fresh water, I have diluted any additives, protectors that were in the system - and since...

Hi All, My first post but I have observed for quite a while! :) I have a Vokera Linea 24 which I think I have now proved has an expansion vessel problem. The same old symptom - loss of pressure in a short period of time (approx 1 - 2 days now heating is in use). I drained the system...