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Mend Worcester Bosch Greenstar He 30 Central Heating Boiler

how can i fix my worcester bosch greenstar he 30?

ea appears if i turn off the yellow water tap but if i leave the water tap in the on position the central heating works unfortunately the pressure then rises past 3 and i have to turn the central heating off.

zoe
January 2010
Worcester BoschWorcester Bosch Greenstar He 30Heating, Convector HeatersWorcester Bosch Central Heating Boiler
the yellow tap is the gas valve. check the red expansion tank for air pessure with the boiler drained down of water

streamflow
January 2010

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Worcester Bosch Greenstar He 30 - Fixes & Pressure