High Lockout
F009 on Intergas Xclusive 24

Your boiler's main internal computer has developed a technical error and can no longer communicate with the burner safely.

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

Internal fault in burner controller.

What causes this fault?

This fault occurs when the boiler's main control centre suffers an internal electronic failure and loses its ability to manage the burner safely. The most common reason is a hardware malfunction within the printed circuit board, often triggered by age or an electrical surge that disrupts the sensitive components required to run the unit.

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

F000View →F001View →F007View →F010View →

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