ignition failure High

Ariston ignition failure Fault Code

Also written as IGNITIONFAILURE — same fault.

The Ariston ignition failure fault code means: your boiler has failed to start because it cannot detect a flame, likely due to a gas supply issue or an internal ignition problem.. It appears on 3 Ariston models in our database.

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: The boiler will signal a shutdown due to ignition failure after 7 seconds if the gas cock is closed
Typical repair cost £120-250 (including labour)

Engineer required

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

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Ariston models that show the ignition failure fault code

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

Source

Ariston ignition failure 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