227
Worcester Bosch fault code
Worcester Bosch 227: no flame signal after ignition
Check these first, then call an engineer
Worcester Bosch describes 227 on Greenstar 4000 and Greenstar 8000 Life boilers as: no flame signal after ignition. Worcester's guidance for a boiler that fails to light (shown as EA on Greenstar i and CDi Classic boilers) lists no gas supply or low gas pressure, a blocked or frozen condensate outlet, or a blocked flue as common causes.
What you can safely do
- Check your gas supply: does your hob work? If there's no gas, Worcester says to contact your gas supplier.
- If it is safe to do so, check the condensate pipe outlet outside for ice or other blockages. Thaw it with a hot water bottle, a microwaveable heat pack or a cloth soaked in hot water. Don't use boiling water.
- If it is safe to do so, check the flue outlet outside for damage or blockages.
- Reset the boiler as your user manual describes, and wait two or three minutes for it to restart.
Call a Gas Safe engineer if
- The code comes back after these checks.
- You smell gas at any point. Leave the property and call 0800 111 999.
Find a Gas Safe engineer near you
Opens the official Gas Safe Register search.
Applies to: Greenstar 4000, Greenstar 8000 Life. Codes can differ between models, so check your manual.