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boiler problems

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Postby ollyburton » Wed Dec 09, 2009 9:09 am

i have a alpha280e combi . when cold pressure is 1bar turn on heating half way pressure rises to 3+bar then blasts off then when cold again presure is too low 0.5 any ideas please.
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vapormatic vaporizer
Last edited by ollyburton on Thu Feb 03, 2011 5:52 pm, edited 1 time in total.
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Postby rosebery » Wed Dec 09, 2009 8:04 pm

Expansion vessel. Either requires recharging or you have a worn out diaphragm.

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