We may have found other answers which could help you.
Click here for Tripping Consumer Switchvaillant ecoTEC plus boiler fault code - how to fix?
Vaillant eco plus 531 boiler?
how to fix water pressure its down at bottom of grey part?
how do I rectify the fault as detailed below?
Vaillant vcw gb242 eh central heating problem?
Hot water comes and goes!?