BoilerFaultCodes.com
rE80 High Lockout

Your boiler has stopped working because its internal computer is unable to communicate with its gas control system.

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: Gas valve driver error – due to an internal failure.

What causes this fault?

This fault occurs when the boiler's main control board loses the ability to send instructions to the gas valve, which is the component that regulates fuel flow for the flame. The most common reason is an electronic failure within the circuitry of the printed circuit board itself, meaning it can no longer safely manage the ignition process.

Typical repair cost £250-450 (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

A boiler cover plan would cover faults like rE80 — no call-out fees, no surprises.

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