microGENUS 27 MFFI High pressure & water leaking from overflow?
i have a microGENUS 27 MFFI & heating works fine, But Pressure goes up & down between 3 & 4 bar, (Red line at 3.0 ) book says should be 1.5, Tried draining water off & seems fine for a day or so, then pressure is Up again ? ? ?
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