While you wait for answers, we may have found some information which could help you.
Click here for Lock Locks HotHow can I fix my Vokera 20/80 R.S. Flowmatic, the water upstairs is cold?
vokera boiler?
How can I repair my vokera 20/80rs flowmatic boiler ?
HOT WATER FLUCTUATION IN TEMP?
Vokera Line 28 Boiler Temperature?
i have a vokera linea 28, the hot water is fine but the radiators wont work?