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I'm sure this happened before.... Gloworm 30 cxi boiler showed evidence of leaking occasionally losing pressure from 1.0 bar to 0.6 bar. The diverter and AAV have been replaced by a gas engineer from Valaint Group and the expansion vessel charged. Within 20 minutes of leaving, the...

I have a Gloworm 30cxi boiler which was fitted 2 years ago with a brand new central heating system. It is located downstairs. I noticed that it was losing pressure (Sept 2009) and found a leak under the boiler. The central heat pipe returning to the boiler was leaking and has been tightened...