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 temperature inside the system is getting dangerously close to freezing and is running its built-in protection mode to prevent ice damage.. It appears on 8 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
Typical repair cost £100-200 (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 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 7 July 2026