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    Ferroli Combi 77 FF Pressure too high on central heating onl

    Hi, I have a Ferroli Combi 77FF works perfectly when using it for hot water no problems at all. It rests at 1 bar but once the central heating is turned on unless we keep the temp way down below normal the pressure rockets up most i let it go to was about 3.5bar. Is there anyway I can get the...
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