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Mend Bosch Greenstar Home Heating Systems

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Mend Bosch Greenstar Boiler Bar

how can i fix worcester-bosch greenstar 25si?

when the heating is on the boiler normally runs at 1 bar pressure but now for some reason when the heating is on it is running at 2.5 bar pressure is there a problem?

mike
November 2010
Bosch GreenstarHeating, Home Heating SystemsGreenstar Boiler Bar
I have a worcester boiler 24 green star and the condensation pipe froze up and the boiler stopped working. I have defrosted the boiler dryed out the in side and the boiler will not fire up

Derek
December 2010
sounds like the expansion vessel has either lost its pre-charge pressure, or the bladder in it has split (if latter, you'll need a new vessel sorry).

Take the dust cap off the vessel's schreider valve (similar to a car tyre cap/valve) and press the pin in gently. If you get air, fine. If you get water, the bladder is split.

CMac
December 2010
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