How much does it cost to fix Worcester Bosch error code Flame detection fault?

Typical repair cost for the Worcester Bosch Flame detection fault fault is £120-250 including labour.

Flame detection fault High

Worcester Bosch Flame detection fault Fault Code

Q: What does the Worcester Bosch Flame detection fault fault code mean?

Your boiler is failing to light the flame or keep it running, which means it cannot provide you with heating or hot water until the ignition system is serviced.

Also written as FLAMEDETECTIONFAULT — same fault.

The Worcester Bosch Flame detection fault fault code means: your boiler is failing to light the flame or keep it running, which means it cannot provide you with heating or hot water until the ignition system is serviced.. It appears on 7 Worcester Bosch models in our database.

Technical description: Photocell filmed over (dirty); Photocell faulty; Control box faulty

Typical repair cost £120-250 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Worcester Bosch models that show the Flame detection fault fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Worcester Bosch Flame detection fault fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026