While you wait for answers, we may have found some information which could help you.
Success
Message
Volkera minute e20 will not ignite?
volkera compact 29 he green light flashing?
my Volkera 80E won't heat water?
my volkera linea 24 boiler keeps losing pressure?
Volkera SP80?
lossing water pressure ?
Why does our boiler light up when "off"?
How to re pressurise a volkera boiler ?
volkera linea 28 no hot water?
Volkera compact 29A Combi always making kettling noise?
How can I turn my Volkera excell 80sp on again?
My Volkera 29a boiler has stopped firin up?