What it means
On Greenstar i ErP and Si, CDi and i System Compact ErP boilers you see EA with 229 under it. The Greenstar 8000 Life and 8000+ show 229 on its own.
What to check, in order
- Check you have gas
Do your gas cooker or hob work? If you have a prepayment meter, check the credit. If there's no gas, contact your gas supplier.
- Check the condensate pipe and the flue outlet
If it's safe to reach, look for ice or a blockage in the condensate pipe outside, and anything blocking the flue outlet.
- Thaw a frozen pipe gently
Only at ground level: use warm water, never boiling, as Worcester's user instructions describe.
- Reset the boiler once
Press the reset button briefly.
When to call a Gas Safe engineer
If EA 229 comes back, call a Gas Safe registered engineer. Worcester's manuals list the gas-air ratio, the gas pressure, the flame sensor or its wiring and blocked condensate pipes. On LPG, an empty or just-refilled tank can cause it too.
Parts people end up buying
Only if the checks above point to a part. Match it to your model number first: it's on a label on the data badge, usually under the boiler or behind the front cover.
- Condensate pipe insulationSearch on Amazon
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Quick answers
What does the Worcester Bosch EA 229 fault code mean?
The burner lit, but the flame went out while the boiler was running, so it has locked out. Worcester names a blocked condensate trap and strong wind blowing into the flue among the causes. On Greenstar i ErP and Si, CDi and i System Compact ErP boilers you see EA with 229 under it. The Greenstar 8000 Life and 8000+ show 229 on its own.
Can I fix Worcester Bosch EA 229 myself?
Easy (about 20 minutes). Start with: check you have gas; check the condensate pipe and the flue outlet; thaw a frozen pipe gently. If EA 229 comes back, call a Gas Safe registered engineer. Worcester's manuals list the gas-air ratio, the gas pressure, the flame sensor or its wiring and blocked condensate pipes. On LPG, an empty or just-refilled tank can cause it too.
Is Worcester Bosch EA 229 worth repairing?
Usually free. Often the gas supply or a frozen condensate pipe, which cost nothing to sort. If it keeps happening, an engineer needs to look.
Checked against
- Worcester Bosch Greenstar Si Compact ErP installation and servicing instructions (PDF)
- Worcester Bosch Greenstar Si Compact ErP user instructions (PDF)
- Worcester Bosch installation and servicing instructions, document 6720883865 (PDF)
Last reviewed October 2026. Manufacturers update their pages, and your manual is the final word. Spotted a mistake? Email contact@appliance-error-codes.com.