Low
LED 4 (Permanent light) on Ferroli DOMINAplus F24D

Your boiler is simply indicating that the central heating system is currently active and running normally to warm your radiators.

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

Central heating circuit on

Engineer required

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

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