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hello again, my boiler still loosing pressure. my dad tried a test to see if it was boiler by disconnecting from central hating system and in 24 hours it just lost half a bar. since then it was reconnected and since connected back to heating system the pressure dropped to 0 within 24 hours. no...

I have read some replies on the site bit do not understand abbreviations lol, please make simple in answers if possible. My boiler when not in use drops down to just above 0 and so I have to raise the pressure which I was shown how to do a while ago. But i have had to do it every day now for 3...