What does Worcester Bosch EA234 mean?

Flame not detected — the boiler failed to establish a flame.

How do I fix Worcester Bosch EA234?

Try first: Check other gas appliances in the house work — that tells you the gas is on; In cold weather, check the white condensate pipe outside isn't frozen — pour warm (not boiling) water over it; Press the reset button once. If that doesn't clear it, the likely part is Flame sensor or ignition electrode.

Worcester Bosch EA234 Fault — What It Means & Fix Cost

⚠ This is the likely cause from the code — a Gas Safe registered engineer confirms it on site. If you can smell gas, stop and ring 0800 111 999.

✅ Try these first — they're free

Often clears it without a callout:

Check other gas appliances in the house work — that tells you the gas is on
In cold weather, check the white condensate pipe outside isn't frozen — pour warm (not boiling) water over it
Press the reset button once

🔧 If that doesn't fix it

The likely cause is one of these — the engineer confirms which:

Most likely part: Flame sensor or ignition electrode

Fixed repair price

£408

Inc. VAT — part & labour, no surprise callout fee. You only pay if you go ahead.

A vetted Gas Safe engineer who covers your postcode will call you back to arrange the repair. No callout fee — you only pay if you go ahead.

Other Worcester Bosch fault codes

Worcester Bosch A1Pump stuck or running dry.…Worcester Bosch A5Fan or air-pressure fault.…Worcester Bosch A61Gas valve fault.…Worcester Bosch C6Fan speed error — the fan isn't running at the expected spee…

Worcester Bosch EA234 — what it means

✅ Try these first — they're free

🔧 If that doesn't fix it

Other Worcester Bosch fault codes

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