Worcester Bosch EA 269 Fault Code: Causes, Fixes & Repair Costs
What does the Worcester Bosch EA 269 fault code mean?
The EA fault code on a Worcester Bosch boiler means the boiler has failed to detect a stable flame after multiple ignition attempts — typically up to four tries depending on the model. As a safety measure, the boiler locks out and stops operating, preventing any unburnt gas from accumulating. The flashing reset button and LED on the front panel are your cues that this lockout has occurred. A note on EA 269 specifically: Worcester Bosch EA codes are often accompanied by a three-digit sub-code that pinpoints the exact stage of the ignition sequence that failed. The most widely documented sub-code is EA 227, which means 'no ionisation detected following ignition' — essentially the burner attempted to light but the flame sensor could not confirm a flame was present. The sub-code 269 does not appear in any published Worcester Bosch fault table or engineer guide, and may be a model-specific internal diagnostic number, a display artefact, or a misread of another code (EA 227 is the most likely candidate). The underlying fault mechanism and the diagnostic approach are the same across the EA family. A Gas Safe engineer with Worcester Bosch diagnostic equipment will be able to confirm the precise meaning of 269 on your specific model. All guidance on this page applies fully to EA 269.
General guidance only — not a substitute for professional advice, and not certified by a Gas Safe engineer. Always have your specific appliance assessed by a qualified professional. Any gas work must be carried out by a Gas Safe registered engineer. If you smell gas or suspect carbon monoxide, leave the property and call the National Gas Emergency line on 0800 111 999.
Common causes
- Gas supply interrupted or low gas pressure Common
If gas is not reaching the boiler at the correct pressure, ignition simply cannot take place. A temporary supply interruption — perhaps from street works, a turned-off isolator valve, or an empty prepayment meter — will trigger an EA lockout. Low working pressure caused by an undersized pipe, a failing gas regulator, or a faulty meter can have the same effect even when the supply is technically 'on'.
- Dirty, worn, or misaligned ignition electrode or flame sensor Common
The ignition electrode creates the spark to light the gas, while the ionisation probe (flame sensor) measures a tiny electrical current through the flame to confirm it is burning. Over time and use, both components can become coated in carbon deposits or corrosion, or physically shift out of their correct position. When this happens, the control board receives no confirmation of a flame and locks out with an EA code, even if the burner did briefly ignite.
- Frozen or blocked condensate pipe Common
Condensing boilers produce acidic waste water that drains away via a plastic condensate pipe, which often runs outside. In cold weather this pipe can freeze solid, backing up into the boiler and triggering a safety lockout. An EA code can appear alongside this blockage, particularly on models where the condensate sensor interacts with the ignition sequence.
- Faulty or stuck gas valve Sometimes
The gas valve regulates how much gas is delivered to the burner. If it sticks, fails to open fully, or is incorrectly calibrated, insufficient gas reaches the burner and no stable flame can form. A defective gas valve is one of the more frequent root causes of persistent EA faults and requires replacement by a Gas Safe engineer.
- Flue blockage or strong wind downdraught Sometimes
The flue removes combustion exhaust gases from the boiler. A physical obstruction — a bird's nest, debris, or ice — can restrict airflow enough to prevent stable combustion. On boilers with horizontally-terminated flues facing prevailing winds, strong gusts can also blow back into the flue and momentarily extinguish the flame, causing the sensor to log an EA lockout.
- Faulty PCB (printed circuit board) Rare
The PCB is the boiler's control centre. If it is defective, it may misinterpret or fail to receive the signal from the flame sensor, concluding that no flame is present even when one exists. A faulty PCB is a less common but more costly diagnosis, and it is often identified only after all other components have been ruled out.
How to fix it
- Check that other gas appliances are working DIY safe
Before doing anything else, try a gas hob or gas fire if you have one. If none of your gas appliances are working, the issue is likely a supply interruption rather than a boiler fault. Contact your gas supplier or check whether the main gas isolation valve (usually next to the meter) is fully open.
- Check your gas meter — especially if you are on a prepayment tariff DIY safe
Make sure your prepayment meter has credit and has not tripped into emergency mode. Also confirm the meter isolation valve is in the open (inline) position. This sounds obvious but is a surprisingly common cause of EA lockouts.
- Inspect the condensate pipe for freezing DIY safe
If temperatures have been near or below freezing, locate the condensate pipe — it is usually a white or grey plastic pipe (22 mm or 32 mm diameter) that exits the boiler and runs to an outside drain. Feel along its length for a frozen section. If you find one, pour lukewarm water (not boiling, which can crack the pipe) along the pipe until it is clear. Once thawed, reset the boiler. This is a common winter cause of EA lockouts.
- Reset the boiler — but no more than two or three times DIY safe
On most Worcester Bosch models, hold the reset button or turn the control knob to the reset position for several seconds. The boiler will run through its ignition sequence. If it fires up and runs normally, monitor it for the next hour. If the EA code returns straight away, or if the boiler has needed resetting repeatedly over recent days, stop resetting and arrange a professional visit — repeated resets without a fix can accelerate wear on ignition components.
- Call a Gas Safe registered engineer for diagnosis and repair Gas Safe engineer
If the above checks have not resolved the fault, the boiler needs professional attention. An engineer will check gas pressure at the inlet and manifold, inspect and clean or replace the ignition electrode and flame sensor, test the gas valve operation, and examine the flue for restrictions. They will also use Worcester Bosch diagnostic tools to confirm whether the sub-code 269 maps to a specific internal fault on your model variant. Do not attempt to open the boiler casing, touch any gas components, or interfere with the gas valve or PCB yourself.
Parts you may need
- Ignition electrode · from £45
- Ionisation probe (flame sensor) · from £55
- Ignition lead set · from £35
- Gas valve · from £180
- PCB (printed circuit board) · from £220
The exact spare depends on your boiler's GC number (on the data badge). Check this against the part before buying.
Typical repair cost
Expect to pay roughly £120–£380, depending on the underlying cause.
Frequently asked questions
What is the difference between EA 227 and EA 269 on a Worcester Bosch boiler?
EA 227 is the most widely documented Worcester Bosch sub-code in the EA family and specifically means 'no ionisation signal detected after the ignition attempt' — in other words, the flame sensor could not confirm a flame was present. EA 269 does not appear in any published Worcester Bosch fault table and its precise meaning is unconfirmed; it may be a model-specific internal diagnostic code, a display misread, or a variant of the same flame-detection fault. The practical diagnostic approach is identical for both codes. A Gas Safe engineer with a Worcester Bosch service tool will be able to read the full fault log and confirm what 269 means on your specific boiler.
Can I fix an EA fault code myself?
There are a handful of safe checks a homeowner can carry out: confirming the gas supply is on, thawing a frozen condensate pipe with warm water, and resetting the boiler up to two or three times. Beyond that, the EA code almost always involves internal components — the ignition electrode, flame sensor, gas valve, or PCB — that must only be touched by a Gas Safe registered engineer. Removing the boiler casing or attempting to adjust the gas valve yourself is both dangerous and illegal.
My Worcester Bosch boiler keeps coming back to EA after every reset — why?
A fault that returns immediately or within a short time after resetting points to a persistent underlying problem rather than a one-off glitch. The most likely culprits are a dirty or failed flame sensor, a worn ignition electrode, low gas pressure, or a defective gas valve. Repeated resets without addressing the root cause add unnecessary wear to the ignition components and the PCB, potentially turning a modest repair into a more expensive one. Stop resetting and book a Gas Safe engineer.
How much does it cost to repair a Worcester Bosch EA fault in the UK?
Most EA fault repairs in the UK fall between £120 and £380 including parts and labour. Cleaning or replacing an ignition electrode or flame sensor is typically at the lower end of that range. A gas valve replacement tends to sit in the middle, usually £200–£350 all in. If the PCB is at fault, costs can rise to £400–£550, which is worth weighing against the boiler's age — if your Worcester Bosch is over 12–15 years old, a new boiler may represent better value than a major component replacement.