BoilerFaultCodes.com
LE High Lockout

Your boiler’s internal computer has encountered a critical communication error and can no longer control the heating process safely.

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: BOARD ERROR

What causes this fault?

This fault occurs when the boiler’s central control board suffers an internal electronic failure or loses the ability to talk to other sensors. It is usually caused by aged electrical components burning out or moisture getting into the casing and short-circuiting the delicate circuitry.

Typical repair cost £280-450 (including labour)

Engineer required

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

Find a Gas Safe engineer

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