High
261 on Worcester Bosch Greenstar CDi Compact

Your boiler is failing to ignite the flame reliably, meaning it cannot produce heating or hot water at the moment.

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

Ignition timing error. Flame not established during the first 4 seconds ignition period.

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

224View →229View →

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