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Mend Vokera Combi Boiler Central Heating Rising Pressure

What is required to fix this?

My vokera combi boiler pressure is continuing to rise even when the filling loop is removed. I cannot use the central heating as the pressure rises quickly after 15mins. What is wrong?

Sheena McGartland
October 2010
VokeraVokera Combi BoilerHeating, Home Heating SystemsCombi Boiler Central Heating Rising Pressure
If it's rising when the heating is on, the expansion vessel needs recharging/replacing.

If it's rising anyway with everything off, the domestic heat exchanger must be 'mixing' and would need renewing.

Carefree
October 2010

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Vokera Combi Boiler Pressure Too High - Fix