High
228 V on Worcester Bosch Hideaway

Your boiler thinks a flame is burning even though it hasn't actually started, which is preventing it from running for safety reasons.

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 signal without flame present – air/gas ratio control valve may need replacing as might the ionisation cable

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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