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