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    Low Pressure in Ariston Microgenus 23 MFFI

    Hi All, We have recently moved into a mid terrace 2 bed house with an Ariston Microgenus 23 MFFI boiler. Over the last few weeks, the pressure has dropped to pretty much zero (it may have been dropping gradually but I only noticed when the boiler kept needing to be restarted). I understand that...