BoilerFaultCodesAriston 06 Fault Code
The Ariston 06 fault code means: your boiler has automatically turned itself on because it detects freezing temperatures and is heating up briefly to protect its internal pipes from frost damage.. It appears on 5 Ariston models in our database.
Technical description: Burner anti-freeze: When the boiler senses a temperature of 3°C or lower, the boiler will fire at minimum power until a temperature of 33°C is achieved, the pump will run for 2 minutes after the burner is switched off.
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 06 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ariston 06 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