While you wait for answers, we may have found some information which could help you.
Success
Message
how do you relight the combi boiler?
Grundfos UPS 15 45 x18 central heating pump?
how can i fix pilot light?
Bosch 24i Combi-boiler?
boiler wont stay alight?
Bosch W275 water heater, diaphragm leaking?
Bosch W275 water heater fault?
Bosch 30CDi how do I restore the pressure. ?
no blue light from the bosch boiler?
How to heat water when therm. is off?
how can i fix my bosch worchester 24cdi boiler?
LPG bosch w-135?