BoilerFaultCodes.com
2920 High Lockout

Your boiler has detected a problem with how it tracks its own flame, causing it to shut down for safety purposes.

Call an engineer soon

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

Technical description: Fault in flame monitoring

What causes this fault?

This fault occurs when the boiler's internal computer is unable to verify that a flame is present, even if the burner has ignited correctly. It is usually caused by a dirty or corroded sensor that can no longer send a clear signal back to the control board, or a fault within the wiring and electronics that manage safety checks. Consequently, the boiler shuts down because it cannot confirm it is operating safely.

Typical repair cost £120-350 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Protect yourself from future repair bills

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