Low
dd.. on Ariston Genus 24 MFFI

Your boiler is signalling that it is currently working correctly to heat the water for your taps and shower.

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

Domestic hot water, burner on

Engineer required

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

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