FA
Worcester Bosch fault code
Worcester Bosch FA: flame detected after the gas was shut off
Engineer only
The boiler detected a flame after it closed the gas supply to the burner. This needs an engineer.
What you can safely do
There is nothing you can safely do yourself with this one. Leave the boiler off and book an engineer.
Call a Gas Safe engineer if
- Book a Gas Safe registered engineer. Don't keep resetting it.
Find a Gas Safe engineer near you
Opens the official Gas Safe Register search.
Applies to: Greenstar CDi Classic. Codes can differ between models, so check your manual.