Low
E 05 on Ariston Euro Combi 30 MFFI

Your boiler is currently running its built-in frost protection mode to prevent internal parts from freezing, which usually happens during very 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 freezing system, pump on

Engineer required

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

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