Low
LED3 on Ferroli F 30 B

Your boiler is currently running to provide you with hot water, and this LED indicator is simply telling you that the tap or shower is active.

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 circuit on

Engineer required

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

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