E61 667 Emergency

Ariston E61 667 Fault Code

Also written as E61667 — same fault.

The Ariston E61 667 fault code means: your boiler has detected that it is incorrectly set up for the type of fuel it is currently receiving, which prevents it from operating safely.. It appears on 1 Ariston model in our database.

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description: Burner jet 0.77 full kit (LPG)
Typical repair cost £150-350 (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 E61 667 fault code

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

Source

Ariston E61 667 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 7 July 2026