How much does it cost to fix Ariston error code Ignition Lockout?

Typical repair cost for the Ariston Ignition Lockout fault is £100-350 including labour.

Ignition Lockout High

Ariston Ignition Lockout Fault Code

Q: What does the Ariston Ignition Lockout fault code mean?

Your boiler is unable to light the gas flame to provide heating or hot water, and has shut down as a safety precaution.

Also written as IGNITIONLOCKOUT — same fault.

The Ariston Ignition Lockout fault code means: your boiler is unable to light the gas flame to provide heating or hot water, and has shut down as a safety precaution.. It appears on 6 Ariston models in our database.

Technical description: The boiler will signal a shut-down due to failure ignition

Typical repair cost £100-350 (including labour)

DIY fix possible

Check if other gas appliances in your home, like a hob, are working to ensure gas supply.Verify that your prepaid gas meter has credit, if applicable.Press the Reset button on the control panel to see if the boiler restarts.

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Ariston models that show the Ignition Lockout fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Ariston Ignition Lockout fault code information on this page is sourced and cross-checked against the official Ariston service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026