High
26 on Johnson Starley C16u

Your boiler is repeatedly struggling to keep the flame lit and has safely shut down to prevent damage.

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 lost signal lost 5 times in 4 minutes. Flame sensing error. Failing gas pressures. Fan fault. Flue blockage.

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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