F
fireblade
Could be heat exchanger on boiler losing pressure down the condense pipe had the same thing on a three year old worcester
Discuss My Potterton boiler keeps losing pressure and I don't know why in the Plumbing Jobs | The Job-board area at PlumbersForums.net
highly unlikely on this boiler i would be checking prv and expansion vessel worth noting on this boiler it has been known for the expansion vessel to crack on its casing but this would cause a very noticeable flood also the valves could be passing pointing the fault back on the system
You have a leak it's just in a area it's not showing. When you turn valves off all your doing is turning off your flow and return pipwork from boiler
Reply to My Potterton boiler keeps losing pressure and I don't know why in the Plumbing Jobs | The Job-board area at PlumbersForums.net
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