2 08 Low

Ariston 2 08 Fault Code

Also written as 208 — same fault.

The Ariston 2 08 fault code means: your boiler has detected that the external conditions are cold enough to risk freezing, so it is temporarily running its protective systems to keep internal parts from being damaged by ice.. It appears on 9 Ariston models in our database.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: Collector frost protection temperature

DIY fix possible

Ensure the boiler's power supply remains switched onMonitor the boiler until the cycle completes and it returns to normal operationCheck that internal heating remains active once the external temperature rises

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Ariston models that show the 2 08 fault code

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

Source

Ariston 2 08 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