Low
60-70 (ll-ll) on Ariston Genus 30 Plus

Your boiler is perfectly fine; it has simply activated its built-in protection system to stop your pipes from freezing during cold weather.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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

Anti-frost mode on (burner and pump in operation)

Engineer required

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

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