While you wait for answers, we may have found some information which could help you.
Click here for Water Summer Radiators
my volkera linea 24 boiler keeps losing pressure?
Volkera minute e20 will not ignite?
How to re pressurise a volkera boiler ?
Why does our boiler light up when "off"?
Volkera compact 29A Combi always making kettling noise?
My Volkera 29a boiler has stopped firin up?