High
F7 228 on Worcester Bosch Danesmoor

Your boiler thinks a flame is present when it shouldn't be, which is preventing the heating system from starting up safely.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Flame error – false flame or flame detected before burner started

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

9A 362View →E5 218View →

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