Ignition Failure / No Flame Detected
The boiler has failed to detect a flame after four ignition attempts, triggering a safety lockout. The most common Worcester Bosch fault code, especially in winter.
EA 227 in winter is most commonly caused by a frozen condensate pipe. Thaw with warm water and reset before calling an engineer.
Step-by-Step Fix Guide
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Step 1
Check other gas appliances work to confirm your gas supply is on
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Step 2
If on a prepayment meter, ensure it has credit
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Step 3
In cold weather, check if the condensate pipe is frozen (locate the white plastic pipe on an outside wall)
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Step 4
If frozen, gently pour warm water (NOT boiling) along its full length until you hear gurgling
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Step 5
Press the reset button once and wait
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Step 6
If the fault persists, call a Gas Safe engineer to inspect the ignition electrode, gas valve, and gas supply
Work on gas appliances must be carried out by a Gas Safe registered engineer. The steps above cover safe checks a homeowner can perform - any internal component replacement requires a qualified professional. If in doubt, always call an engineer.