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Sabre 29 water pressure drop?

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Mend Sabre 28 Boiler Heating Pressure

How to fix my Sabre 28 boiler?

Pressure rises to 3 bar, boiler switches off to stand by

Ronnie Ramsay
September 2009
SabreSabre 28Heating, Home Heating SystemsBoiler Heating Pressure
it's the same as a vokera compact. check the filling loop is closed firstly. if it only happens when heating is on then faulty expansion vessel or bloked expansion pipe (common on this boiler). if constantly over pressurising then main heat exchanger is burst internally (no plate to plate heat ex on this oiler)

Ian
September 2009
Never worked on one of these, Need more info, but if it does it when its in heating mode, likely expansion vessel defect. If it does it while its not running plate to plate heat exchanger is split internally

Mark Gas Engineer
September 2009

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