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vokera compact 28 combi boiler?

when i turn my heating on and the temp up to below auto the pressure goes up to 3 bar and vents it then keeps venting untill no more water is left in it. the hot water works fine
GAry Davison, June 2009
when water tap is turned on sometimes boiler fires but mostly the red light comes on

Chris, June 2009
Sounds like the Expansion vessel has lost it's air charge, or the water connection to the vessel is blocked

www.elanar.co.uk, June 2009
link Click here to see other fixes for Vokera.