Quick answer: The Worcester Bosch EA 229 fault is a flame-detection or ignition lockout — the boiler hasn’t detected a flame when it should, so it shuts down for safety. Common causes are gas supply issues, a frozen condensate pipe, or ignition/flame-sensing faults. A single reset may clear it; a recurring EA 229 needs a Gas Safe engineer.
The EA 229 fault on a Worcester Bosch is an ignition-related lockout that leaves you without heat. Here’s what it means and what you can safely check. A quick point first: if your Worcester is over about seven years old and EA faults keep recurring, an ageing boiler is often better replaced than repeatedly repaired, so it’s worth weighing up a new boiler installation.
What Does the Worcester Bosch EA 229 Error Code Mean?
EA 229 means the boiler failed to detect a flame — it either didn’t ignite or couldn’t sense the flame, so it locked out.
The “EA” family on Worcester Bosch boilers relates to ignition and flame detection. Rather than keep releasing gas, the boiler shuts down safely. Something has interrupted lighting or flame sensing.
What Causes a Worcester Bosch EA 229 Fault?
The usual causes are gas supply problems, a frozen condensate pipe, or ignition and flame-detection faults.
- Gas supply — an off or partly closed valve, or low pressure
- Frozen condensate pipe — very common in Scottish winters
- Ignition electrodes or leads — worn, preventing a spark
- Flame sensing fault — the boiler can’t detect the flame
- Gas valve issues — inconsistent gas delivery
How Do You Fix a Worcester Bosch EA 229 Error?
Check the gas is on and other appliances work, look for a frozen condensate pipe, then reset once.
- Test other gas appliances — if none work, it’s a supply issue
- Check the gas valve to the boiler is open
- Check the condensate pipe for freezing if it’s cold (see below)
- Reset once using the reset button
If EA 229 returns straight after, stop resetting and book a boiler repair — flame and ignition faults need an engineer.
Can a Frozen Condensate Pipe Cause EA 229 in Scotland?
Yes — a frozen condensate pipe is a very common winter cause of an EA 229 lockout here, and it’s often something you can thaw safely yourself.
When the outside condensate pipe freezes, waste water backs up and the boiler locks out. Warming the exposed outdoor section with warm water or a covered hot water bottle usually clears it, then a reset should restore heat. In a Scottish winter this is always the first thing to rule out.
Does Servicing Prevent EA 229 Faults?
Yes — servicing keeps ignition electrodes, flame sensors and the condensate system in good order, heading off many EA 229 lockouts.
A yearly boiler service is the best protection against surprise ignition faults. Booking it for autumn means your Worcester is ready before the coldest months.
When Should You Call an Engineer for Worcester Bosch EA 229?
Call a Gas Safe engineer if the boiler won’t fire after a reset, if other gas appliances also fail, or if you suspect an ignition or flame-sensing fault.
Ignition, flame and gas components are strictly engineer territory. If the simple checks don’t clear it, that’s your cue.
Local Worcester Bosch Boiler Repairs Across Edinburgh and Scotland
We’re Edinburgh-based and cover central Scotland, so we can reach a no-heat EA 229 quickly — and we see plenty each winter. If your Worcester won’t fire, contact our Gas Safe engineers.
Frequently Asked Questions About the Worcester Bosch EA 229 Error
What’s the difference between the Worcester EA 229 and EA 227 codes?
Both sit in the “EA” ignition and flame-detection family, but they’re logged slightly differently. If your display shows EA 227 rather than EA 229, see our guide to the Worcester Bosch EA 227 error—the checks are similar, focusing on gas supply, ignition and the condensate pipe.
How many times can I reset my Worcester after an EA 229 fault?
Once. If a single reset doesn’t restore heat, repeated attempts won’t help and you should call a Gas Safe engineer rather than keep resetting.
Why does EA 229 appear more often in winter?
Frozen condensate pipes are a leading cold-weather cause, and Scotland’s freezes readily catch exposed outdoor pipework. Thawing the pipe often clears a winter EA 229.
Does an EA 229 fault mean I need a new boiler?
Not on its own — many EA 229 faults are fixable. But if your Worcester is older and EA faults keep recurring, it’s worth weighing ongoing repair costs against a replacement.
