potterton combi boiler 28he expansion vessel replace

changing the expansion vessel seems to have solved a multitude of problems ie leaks , loosing pressure E119, refilling, over pressure,back pressure, water to hot ,pressure relief problems and lastly gas supply Error, and thermostat seems to be working now

https://www.ebay.co.uk/itm/POTTERTON-PROMAX-COMBI-24-28-HE-HE-PLUS-A-EXPANSION-VESSEL-8-LITRE-5114691/322133833685?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

Видео potterton combi boiler 28he expansion vessel replace канала Mark Davies