I have a Vaillant ecotec pro 24 boiler flashing a F22 message which i know means i need to repressurise.
All the videos i've seen show that you need to turn 2 grey knobs but i don't have any valves etc. to turn. can anyone help explain what i need to do to get this repressurised? Thanks!
All the videos i've seen show that you need to turn 2 grey knobs but i don't have any valves etc. to turn. can anyone help explain what i need to do to get this repressurised? Thanks!