High Lockout
15 on Vokera Easi-Heat 25

Your boiler thinks it sees a flame even though it hasn't started the ignition process yet, which is causing it to shut down for safety.

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

false flame

What causes this fault?

This fault occurs when the boiler's sensors detect an electrical current that mimics a flame, even though the gas hasn't been turned on yet. This is usually caused by a dirty or damaged detection probe sending a false signal, or a fault within the main control board that misinterprets electrical background noise as a fire.

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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