While you wait for answers, we may have found some information which could help you.
Click here for Turbo Max 282 1eVaillant 828E - no hot water?
Advice?
Vaillant VCW-Sine18 T3WFH Lights but then goes off after 5 Min?
Vailliant turbo max plus 824e?
Problem with the pressure in combi boiler?
how do I rectify the fault as detailed below?