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Pressure on boiler shooting up

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Bathman31

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Hi all hope you can help, my pressure on my boiler is shooting up and blowing off after about ten mins, the boiler is a main eco 30. Think it’s the expansion vessel as pressed the shredder at the top and hardly any air in, can I take it out and re pressure it as can’t get pump in to do it witt it in the boiler?

Cheers in advance marc
 
Nice easy fix but you need to get a gas safe engy in sorry to say
 
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