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Mend Worcester Bosch Highflow 400 Home Heating Boiler

worcester bosch highflow400?

Hi my boiler is about 9years old it works fine but the pressre gauge goes over 3 bar when heating is on anybody no what problem is

dave
October 2009
Worcester BoschWorcester Bosch Highflow 400Heating, Home Heating SystemsWorcester Bosch Home Heating Boiler
expansion vessel needs re-pressurised.

Ian
October 2009

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Worcester Bosch Highflow 400 - High Pressure