Central Heating loosing pressure over 7 days

diycooper · 18 Dec 2013

I have a boiler loosing pressure from 1.2 to 0.9 over 7 - 9 days.I cannot find a leak by boiler or radiator valves. Does it only need a small amount of water to drop this much as I cannot see any threw ceiling etc. Would leak sealant possibly get this leak or is it to big ?

Thanks

diycooper · 18 Dec 2013

Also already check PRV its not leaking so got to be on system.

diynot

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Central Heating loosing pressure over 7 days

diycooper

diycooper

DIYnot Local

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